312645685 has 32 divisors (see below), whose sum is σ = 416782080. Its totient is φ = 223257600.

The previous prime is 312645677. The next prime is 312645689. The reversal of 312645685 is 586546213.

It is not a de Polignac number, because 312645685 - 2³ = 312645677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312645689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297165 + ... + 1297405.

It is an arithmetic number, because the mean of its divisors is an integer number (13024440).

Almost surely, 2^312645685 is an apocalyptic number.

It is an amenable number.

312645685 is a deficient number, since it is larger than the sum of its proper divisors (104136395).

312645685 is a wasteful number, since it uses less digits than its factorization.

312645685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 172800, while the sum is 40.

The square root of 312645685 is about 17681.7896435853. The cubic root of 312645685 is about 678.7098410806.

The spelling of 312645685 in words is "three hundred twelve million, six hundred forty-five thousand, six hundred eighty-five".