670668137874 has 80 divisors (see below), whose sum is σ = 1807871841600. Its totient is φ = 181534226976.

The previous prime is 670668137873. The next prime is 670668137899. The reversal of 670668137874 is 478731866076.

It is a happy number.

670668137874 is a `hidden beast` number, since 67 + 0 + 66 + 81 + 378 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (670668137873) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15542089 + ... + 15585180.

It is an arithmetic number, because the mean of its divisors is an integer number (22598398020).

Almost surely, 2^670668137874 is an apocalyptic number.

670668137874 is an abundant number, since it is smaller than the sum of its proper divisors (1137203703726).

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

670668137874 is a wasteful number, since it uses less digits than its factorization.

670668137874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31127309 (or 31127300 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 670668137874 in words is "six hundred seventy billion, six hundred sixty-eight million, one hundred thirty-seven thousand, eight hundred seventy-four".