64271312 has 20 divisors (see below), whose sum is σ = 142315296. Its totient is φ = 27544800.

The previous prime is 64271303. The next prime is 64271321. The reversal of 64271312 is 21317246.

It is an interprime number because it is at equal distance from previous prime (64271303) and next prime (64271321).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286814 + ... + 287037.

Almost surely, 2^64271312 is an apocalyptic number.

It is an amenable number.

64271312 is an abundant number, since it is smaller than the sum of its proper divisors (78043984).

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

64271312 is a wasteful number, since it uses less digits than its factorization.

64271312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573866 (or 573860 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 64271312 is about 8016.9390667511. The cubic root of 64271312 is about 400.5644364873.

Adding to 64271312 its reverse (21317246), we get a palindrome (85588558).

The spelling of 64271312 in words is "sixty-four million, two hundred seventy-one thousand, three hundred twelve".