146554640 has 20 divisors (see below), whose sum is σ = 340739724. Its totient is φ = 58621824.

The previous prime is 146554631. The next prime is 146554649. The reversal of 146554640 is 46455641.

It is an interprime number because it is at equal distance from previous prime (146554631) and next prime (146554649).

It can be written as a sum of positive squares in 2 ways, for example, as 35378704 + 111175936 = 5948^2 + 10544^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 146554640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146554649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915887 + ... + 916046.

Almost surely, 2^146554640 is an apocalyptic number.

146554640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146554640 is an abundant number, since it is smaller than the sum of its proper divisors (194185084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

146554640 is a wasteful number, since it uses less digits than its factorization.

146554640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831946 (or 1831940 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 146554640 is about 12105.9753840820. The cubic root of 146554640 is about 527.2296886285.

The spelling of 146554640 in words is "one hundred forty-six million, five hundred fifty-four thousand, six hundred forty".