40646636 has 6 divisors (see below), whose sum is σ = 71131620. Its totient is φ = 20323316.

The previous prime is 40646629. The next prime is 40646647. The reversal of 40646636 is 63664604.

It is a junction number, because it is equal to n+sod(n) for n = 40646596 and 40646605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080826 + ... + 5080833.

It is an arithmetic number, because the mean of its divisors is an integer number (11855270).

Almost surely, 2^40646636 is an apocalyptic number.

It is an amenable number.

40646636 is a deficient number, since it is larger than the sum of its proper divisors (30484984).

40646636 is a wasteful number, since it uses less digits than its factorization.

40646636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161663 (or 10161661 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 40646636 is about 6375.4714335491. The cubic root of 40646636 is about 343.8282336095.

The spelling of 40646636 in words is "forty million, six hundred forty-six thousand, six hundred thirty-six".