670683691944 has 96 divisors (see below), whose sum is σ = 2076741563520. Its totient is φ = 191548603008.

The previous prime is 670683691921. The next prime is 670683691957. The reversal of 670683691944 is 449196386076.

It is a super-2 number, since 2×670683691944² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028517 + ... + 1548939.

It is an arithmetic number, because the mean of its divisors is an integer number (21632724620).

Almost surely, 2^670683691944 is an apocalyptic number.

It is an amenable number.

670683691944 is an abundant number, since it is smaller than the sum of its proper divisors (1406057871576).

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

670683691944 is a wasteful number, since it uses less digits than its factorization.

670683691944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522999 (or 522992 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 670683691944 in words is "six hundred seventy billion, six hundred eighty-three million, six hundred ninety-one thousand, nine hundred forty-four".