64278296 has 8 divisors (see below), whose sum is σ = 120521820. Its totient is φ = 32139144.

The previous prime is 64278257. The next prime is 64278299. The reversal of 64278296 is 69287246.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64278299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4017386 + ... + 4017401.

Almost surely, 2^64278296 is an apocalyptic number.

It is an amenable number.

64278296 is a deficient number, since it is larger than the sum of its proper divisors (56243524).

64278296 is a wasteful number, since it uses less digits than its factorization.

64278296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034793 (or 8034789 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 64278296 is about 8017.3746326338. The cubic root of 64278296 is about 400.5789449858.

The spelling of 64278296 in words is "sixty-four million, two hundred seventy-eight thousand, two hundred ninety-six".