654621064 has 16 divisors (see below), whose sum is σ = 1227721500. Its totient is φ = 327228672.

The previous prime is 654621059. The next prime is 654621103. The reversal of 654621064 is 460126456.

It can be written as a sum of positive squares in 2 ways, for example, as 593312164 + 61308900 = 24358^2 + 7830^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36084 + ... + 51100.

Almost surely, 2^654621064 is an apocalyptic number.

It is an amenable number.

654621064 is a deficient number, since it is larger than the sum of its proper divisors (573100436).

654621064 is a wasteful number, since it uses less digits than its factorization.

654621064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20472 (or 20468 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 654621064 is about 25585.5635857411. The cubic root of 654621064 is about 868.2870528010.

The spelling of 654621064 in words is "six hundred fifty-four million, six hundred twenty-one thousand, sixty-four".