64534887 has 30 divisors (see below), whose sum is σ = 101791008. Its totient is φ = 40740408.

The previous prime is 64534853. The next prime is 64534891. The reversal of 64534887 is 78843546.

It is not a de Polignac number, because 64534887 - 2⁷ = 64534759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64534817) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 28138 + ... + 30344.

Almost surely, 2^64534887 is an apocalyptic number.

64534887 is a deficient number, since it is larger than the sum of its proper divisors (37256121).

64534887 is a wasteful number, since it uses less digits than its factorization.

64534887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2229 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 64534887 is about 8033.3608782377. The cubic root of 64534887 is about 401.1112578229. Note that the first 3 decimals are identical.

The spelling of 64534887 in words is "sixty-four million, five hundred thirty-four thousand, eight hundred eighty-seven".