64072078 has 16 divisors (see below), whose sum is σ = 113626080. Its totient is φ = 26512416.

The previous prime is 64072067. The next prime is 64072087. The reversal of 64072078 is 87027046.

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, 78501 + ... + 79312.

It is an arithmetic number, because the mean of its divisors is an integer number (7101630).

Almost surely, 2^64072078 is an apocalyptic number.

64072078 is a deficient number, since it is larger than the sum of its proper divisors (49554002).

64072078 is a wasteful number, since it uses less digits than its factorization.

64072078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157851.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 64072078 is about 8004.5036073451. The cubic root of 64072078 is about 400.1501061633.

The spelling of 64072078 in words is "sixty-four million, seventy-two thousand, seventy-eight".