147665620 has 12 divisors (see below), whose sum is σ = 310097844. Its totient is φ = 59066240.

The previous prime is 147665611. The next prime is 147665627. The reversal of 147665620 is 26566741.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35856144 + 111809476 = 5988^2 + 10574^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 147665620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147665627) 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, 3691621 + ... + 3691660.

It is an arithmetic number, because the mean of its divisors is an integer number (25841487).

Almost surely, 2^147665620 is an apocalyptic number.

147665620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147665620 is an abundant number, since it is smaller than the sum of its proper divisors (162432224).

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

147665620 is a wasteful number, since it uses less digits than its factorization.

147665620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383290 (or 7383288 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 147665620 is about 12151.7743560354. The cubic root of 147665620 is about 528.5585848909.

The spelling of 147665620 in words is "one hundred forty-seven million, six hundred sixty-five thousand, six hundred twenty".