655147904 has 32 divisors (see below), whose sum is σ = 1381957200. Its totient is φ = 308303872.

The previous prime is 655147891. The next prime is 655147907. The reversal of 655147904 is 409741556.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×655147904² = 858437552231186432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655147907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148364 + ... + 152715.

Almost surely, 2^655147904 is an apocalyptic number.

655147904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

655147904 is an abundant number, since it is smaller than the sum of its proper divisors (726809296).

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

655147904 is a wasteful number, since it uses less digits than its factorization.

655147904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301110 (or 301098 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 655147904 is about 25595.8571647835. The cubic root of 655147904 is about 868.5199232419.

The spelling of 655147904 in words is "six hundred fifty-five million, one hundred forty-seven thousand, nine hundred four".