670149695688 has 128 divisors (see below), whose sum is σ = 1864580497920. Its totient is φ = 199007170560.

The previous prime is 670149695687. The next prime is 670149695707. The reversal of 670149695688 is 886596941076.

It is a super-2 number, since 2×670149695688² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (670149695681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3315631 + ... + 3511937.

It is an arithmetic number, because the mean of its divisors is an integer number (14567035140).

Almost surely, 2^670149695688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670149695688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932290248960).

670149695688 is an abundant number, since it is smaller than the sum of its proper divisors (1194430802232).

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

670149695688 is a wasteful number, since it uses less digits than its factorization.

670149695688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196587 (or 196583 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 69.

The spelling of 670149695688 in words is "six hundred seventy billion, one hundred forty-nine million, six hundred ninety-five thousand, six hundred eighty-eight".