40632664 has 8 divisors (see below), whose sum is σ = 76186260. Its totient is φ = 20316328.

The previous prime is 40632643. The next prime is 40632667. The reversal of 40632664 is 46623604.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40632667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539534 + ... + 2539549.

Almost surely, 2^40632664 is an apocalyptic number.

It is an amenable number.

40632664 is a deficient number, since it is larger than the sum of its proper divisors (35553596).

40632664 is a wasteful number, since it uses less digits than its factorization.

40632664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079089 (or 5079085 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 40632664 is about 6374.3755772625. The cubic root of 40632664 is about 343.7888329022.

The spelling of 40632664 in words is "forty million, six hundred thirty-two thousand, six hundred sixty-four".