64798871 has 4 divisors (see below), whose sum is σ = 64855752. Its totient is φ = 64741992.

The previous prime is 64798861. The next prime is 64798891. The reversal of 64798871 is 17889746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64798871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64798861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26696 + ... + 29021.

It is an arithmetic number, because the mean of its divisors is an integer number (16213938).

Almost surely, 2^64798871 is an apocalyptic number.

64798871 is a deficient number, since it is larger than the sum of its proper divisors (56881).

64798871 is a wasteful number, since it uses less digits than its factorization.

64798871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56880.

The product of its digits is 677376, while the sum is 50.

The square root of 64798871 is about 8049.7745931175. The cubic root of 64798871 is about 401.6574373512.

The spelling of 64798871 in words is "sixty-four million, seven hundred ninety-eight thousand, eight hundred seventy-one".