655506624 has 56 divisors (see below), whose sum is σ = 1809780480. Its totient is φ = 209000704.

The previous prime is 655506581. The next prime is 655506629. The reversal of 655506624 is 426605556.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (655506629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69804 + ... + 78635.

Almost surely, 2^655506624 is an apocalyptic number.

655506624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

655506624 is an abundant number, since it is smaller than the sum of its proper divisors (1154273856).

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

655506624 is a wasteful number, since it uses less digits than its factorization.

655506624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148477 (or 148467 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 655506624 is about 25602.8635898409. The cubic root of 655506624 is about 868.6784109254.

The spelling of 655506624 in words is "six hundred fifty-five million, five hundred six thousand, six hundred twenty-four".