64774040 has 32 divisors (see below), whose sum is σ = 153414000. Its totient is φ = 24545664.

The previous prime is 64774033. The next prime is 64774057. The reversal of 64774040 is 4047746.

It is a junction number, because it is equal to n+sod(n) for n = 64773988 and 64774006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41855 + ... + 43374.

Almost surely, 2^64774040 is an apocalyptic number.

It is an amenable number.

64774040 is an abundant number, since it is smaller than the sum of its proper divisors (88639960).

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

64774040 is a wasteful number, since it uses less digits than its factorization.

64774040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85259 (or 85255 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64774040 is about 8048.2321040089. The cubic root of 64774040 is about 401.6061256030.

The spelling of 64774040 in words is "sixty-four million, seven hundred seventy-four thousand, forty".