64607987 has 2 divisors, whose sum is σ = 64607988. Its totient is φ = 64607986.

The previous prime is 64607981. The next prime is 64608023. The reversal of 64607987 is 78970646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64607987 - 2⁸ = 64607731 is a prime.

It is not a weakly prime, because it can be changed into another prime (64607981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32303993 + 32303994.

It is an arithmetic number, because the mean of its divisors is an integer number (32303994).

Almost surely, 2^64607987 is an apocalyptic number.

64607987 is a deficient number, since it is larger than the sum of its proper divisors (1).

64607987 is an equidigital number, since it uses as much as digits as its factorization.

64607987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 64607987 is about 8037.9093674910. The cubic root of 64607987 is about 401.2626496790.

The spelling of 64607987 in words is "sixty-four million, six hundred seven thousand, nine hundred eighty-seven".