655421704 has 32 divisors (see below), whose sum is σ = 1411156800. Its totient is φ = 279558720.

The previous prime is 655421699. The next prime is 655421713. The reversal of 655421704 is 407124556.

It is a super-2 number, since 2×655421704² = 859155220148527232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655421704.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15919 + ... + 39550.

It is an arithmetic number, because the mean of its divisors is an integer number (44098650).

Almost surely, 2^655421704 is an apocalyptic number.

It is an amenable number.

655421704 is an abundant number, since it is smaller than the sum of its proper divisors (755735096).

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

655421704 is a wasteful number, since it uses less digits than its factorization.

655421704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55693 (or 55689 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 655421704 is about 25601.2051278841. The cubic root of 655421704 is about 868.6408972662.

The spelling of 655421704 in words is "six hundred fifty-five million, four hundred twenty-one thousand, seven hundred four".