40664682 has 48 divisors (see below), whose sum is σ = 91383552. Its totient is φ = 13060320.

The previous prime is 40664681. The next prime is 40664707. The reversal of 40664682 is 28646604.

It is a happy number.

40664682 is a `hidden beast` number, since 4 + 0 + 6 + 646 + 8 + 2 = 666.

It is a super-2 number, since 2×40664682² = 3307232724322248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40664681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59728 + ... + 60404.

It is an arithmetic number, because the mean of its divisors is an integer number (1903824).

Almost surely, 2^40664682 is an apocalyptic number.

40664682 is an abundant number, since it is smaller than the sum of its proper divisors (50718870).

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

40664682 is a wasteful number, since it uses less digits than its factorization.

40664682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 40664682 is about 6376.8865443883. The cubic root of 40664682 is about 343.8791095401.

The spelling of 40664682 in words is "forty million, six hundred sixty-four thousand, six hundred eighty-two".