64276839 has 12 divisors (see below), whose sum is σ = 101284872. Its totient is φ = 38955600.

The previous prime is 64276819. The next prime is 64276843. The reversal of 64276839 is 93867246.

It is a de Polignac number, because none of the positive numbers 2^k-64276839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64276794 and 64276803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64276819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324532 + ... + 324729.

It is an arithmetic number, because the mean of its divisors is an integer number (8440406).

Almost surely, 2^64276839 is an apocalyptic number.

64276839 is a deficient number, since it is larger than the sum of its proper divisors (37008033).

64276839 is a wasteful number, since it uses less digits than its factorization.

64276839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649278 (or 649275 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64276839 is about 8017.2837669625. The cubic root of 64276839 is about 400.5759183139.

The spelling of 64276839 in words is "sixty-four million, two hundred seventy-six thousand, eight hundred thirty-nine".