40664536 has 16 divisors (see below), whose sum is σ = 83177640. Its totient is φ = 18483840.

The previous prime is 40664501. The next prime is 40664549. The reversal of 40664536 is 63546604.

It is a congruent number.

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, 230961 + ... + 231136.

Almost surely, 2^40664536 is an apocalyptic number.

It is an amenable number.

40664536 is an abundant number, since it is smaller than the sum of its proper divisors (42513104).

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

40664536 is a wasteful number, since it uses less digits than its factorization.

40664536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462114 (or 462110 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 40664536 is about 6376.8750967853. The cubic root of 40664536 is about 343.8786979920.

The spelling of 40664536 in words is "forty million, six hundred sixty-four thousand, five hundred thirty-six".