312665648 has 20 divisors (see below), whose sum is σ = 613090968. Its totient is φ = 154448640.

The previous prime is 312665621. The next prime is 312665677. The reversal of 312665648 is 846566213.

It is a super-3 number, since 3×312665648³ (a number of 26 digits) contains 333 as substring.

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, 116393 + ... + 119048.

Almost surely, 2^312665648 is an apocalyptic number.

It is an amenable number.

312665648 is a deficient number, since it is larger than the sum of its proper divisors (300425320).

312665648 is a wasteful number, since it uses less digits than its factorization.

312665648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235532 (or 235526 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 312665648 is about 17682.3541419122. The cubic root of 312665648 is about 678.7242863956.

It can be divided in two parts, 312665 and 648, that added together give a palindrome (313313).

The spelling of 312665648 in words is "three hundred twelve million, six hundred sixty-five thousand, six hundred forty-eight".