40571664 has 40 divisors (see below), whose sum is σ = 119784000. Its totient is φ = 11591808.

The previous prime is 40571621. The next prime is 40571677. The reversal of 40571664 is 46617504.

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, 60039 + ... + 60710.

It is an arithmetic number, because the mean of its divisors is an integer number (2994600).

Almost surely, 2^40571664 is an apocalyptic number.

It is an amenable number.

40571664 is an abundant number, since it is smaller than the sum of its proper divisors (79212336).

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

40571664 is a wasteful number, since it uses less digits than its factorization.

40571664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120767 (or 120761 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40571664 is about 6369.5889977298. The cubic root of 40571664 is about 343.6167084762.

The spelling of 40571664 in words is "forty million, five hundred seventy-one thousand, six hundred sixty-four".