64716078 has 16 divisors (see below), whose sum is σ = 147922560. Its totient is φ = 18490296.

The previous prime is 64716077. The next prime is 64716079. The reversal of 64716078 is 87061746.

It is an interprime number because it is at equal distance from previous prime (64716077) and next prime (64716079).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64716073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770388 + ... + 770471.

It is an arithmetic number, because the mean of its divisors is an integer number (9245160).

Almost surely, 2^64716078 is an apocalyptic number.

64716078 is an abundant number, since it is smaller than the sum of its proper divisors (83206482).

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

64716078 is a wasteful number, since it uses less digits than its factorization.

64716078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540871.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 64716078 is about 8044.6303830568. The cubic root of 64716078 is about 401.4862996100.

The spelling of 64716078 in words is "sixty-four million, seven hundred sixteen thousand, seventy-eight".