64487516 has 6 divisors (see below), whose sum is σ = 112853160. Its totient is φ = 32243756.

The previous prime is 64487491. The next prime is 64487537. The reversal of 64487516 is 61578446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060936 + ... + 8060943.

It is an arithmetic number, because the mean of its divisors is an integer number (18808860).

Almost surely, 2^64487516 is an apocalyptic number.

It is an amenable number.

64487516 is a deficient number, since it is larger than the sum of its proper divisors (48365644).

64487516 is a wasteful number, since it uses less digits than its factorization.

64487516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16121883 (or 16121881 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 64487516 is about 8030.4119446016. The cubic root of 64487516 is about 401.0130902873.

The spelling of 64487516 in words is "sixty-four million, four hundred eighty-seven thousand, five hundred sixteen".