64632087 has 20 divisors (see below), whose sum is σ = 103977720. Its totient is φ = 39772944.

The previous prime is 64632059. The next prime is 64632089. The reversal of 64632087 is 78023646.

64632087 is a `hidden beast` number, since 646 + 3 + 2 + 0 + 8 + 7 = 666.

It is not a de Polignac number, because 64632087 - 2¹² = 64627991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64632089) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29637 + ... + 31742.

It is an arithmetic number, because the mean of its divisors is an integer number (5198886).

Almost surely, 2^64632087 is an apocalyptic number.

64632087 is a deficient number, since it is larger than the sum of its proper divisors (39345633).

64632087 is a wasteful number, since it uses less digits than its factorization.

64632087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61404 (or 61395 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64632087 is about 8039.4083737549. The cubic root of 64632087 is about 401.3125363269.

The spelling of 64632087 in words is "sixty-four million, six hundred thirty-two thousand, eighty-seven".