40564866 has 16 divisors (see below), whose sum is σ = 81216864. Its totient is φ = 13507104.

The previous prime is 40564837. The next prime is 40564871. The reversal of 40564866 is 66846504.

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, 3501 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (5076054).

Almost surely, 2^40564866 is an apocalyptic number.

40564866 is an abundant number, since it is smaller than the sum of its proper divisors (40651998).

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

40564866 is a wasteful number, since it uses less digits than its factorization.

40564866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 40564866 is about 6369.0553459677. The cubic root of 40564866 is about 343.5975157965.

The spelling of 40564866 in words is "forty million, five hundred sixty-four thousand, eight hundred sixty-six".