146690644 has 24 divisors (see below), whose sum is σ = 268635528. Its totient is φ = 70012800.

The previous prime is 146690639. The next prime is 146690651. The reversal of 146690644 is 446096641.

It can be written as a sum of positive squares in 4 ways, for example, as 40806544 + 105884100 = 6388^2 + 10290^2 .

It is a junction number, because it is equal to n+sod(n) for n = 146690597 and 146690606.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1507 + ... + 17194.

It is an arithmetic number, because the mean of its divisors is an integer number (11193147).

Almost surely, 2^146690644 is an apocalyptic number.

It is an amenable number.

146690644 is a deficient number, since it is larger than the sum of its proper divisors (121944884).

146690644 is a wasteful number, since it uses less digits than its factorization.

146690644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18795 (or 18793 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 146690644 is about 12111.5913075037. The cubic root of 146690644 is about 527.3927294732.

The spelling of 146690644 in words is "one hundred forty-six million, six hundred ninety thousand, six hundred forty-four".