64536078 has 16 divisors (see below), whose sum is σ = 133523280. Its totient is φ = 20770176.

The previous prime is 64536067. The next prime is 64536083. The reversal of 64536078 is 87063546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185275 + ... + 185622.

It is an arithmetic number, because the mean of its divisors is an integer number (8345205).

Almost surely, 2^64536078 is an apocalyptic number.

64536078 is an abundant number, since it is smaller than the sum of its proper divisors (68987202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64536078 is a wasteful number, since it uses less digits than its factorization.

64536078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370931.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 64536078 is about 8033.4350062722. The cubic root of 64536078 is about 401.1137253284.

The spelling of 64536078 in words is "sixty-four million, five hundred thirty-six thousand, seventy-eight".