64304487 has 24 divisors (see below), whose sum is σ = 101451168. Its totient is φ = 39009600.

The previous prime is 64304473. The next prime is 64304491. The reversal of 64304487 is 78440346.

64304487 is a `hidden beast` number, since 643 + 0 + 4 + 4 + 8 + 7 = 666.

It is not a de Polignac number, because 64304487 - 2¹⁵ = 64271719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64304437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4437 + ... + 12177.

It is an arithmetic number, because the mean of its divisors is an integer number (4227132).

Almost surely, 2^64304487 is an apocalyptic number.

64304487 is a deficient number, since it is larger than the sum of its proper divisors (37146681).

64304487 is a wasteful number, since it uses less digits than its factorization.

64304487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831 (or 7828 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 64304487 is about 8019.0078563373. The cubic root of 64304487 is about 400.6333445740.

The spelling of 64304487 in words is "sixty-four million, three hundred four thousand, four hundred eighty-seven".