64434087 has 6 divisors (see below), whose sum is σ = 93071472. Its totient is φ = 42956052.

The previous prime is 64434079. The next prime is 64434091. The reversal of 64434087 is 78043446.

64434087 is a `hidden beast` number, since 644 + 3 + 4 + 0 + 8 + 7 = 666.

It is not a de Polignac number, because 64434087 - 2³ = 64434079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64434037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3579663 + ... + 3579680.

It is an arithmetic number, because the mean of its divisors is an integer number (15511912).

Almost surely, 2^64434087 is an apocalyptic number.

64434087 is a deficient number, since it is larger than the sum of its proper divisors (28637385).

64434087 is a wasteful number, since it uses less digits than its factorization.

64434087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159349 (or 7159346 counting only the distinct ones).

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

The square root of 64434087 is about 8027.0845890647. The cubic root of 64434087 is about 400.9023109735.

The spelling of 64434087 in words is "sixty-four million, four hundred thirty-four thousand, eighty-seven".