670872658427 has 4 divisors (see below), whose sum is σ = 689004351936. Its totient is φ = 652740964920.

The previous prime is 670872658409. The next prime is 670872658429. The reversal of 670872658427 is 724856278076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670872658427 - 2⁶ = 670872658363 is a prime.

It is a super-2 number, since 2×670872658427² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670872658427.

It is not an unprimeable number, because it can be changed into a prime (670872658429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9065846699 + ... + 9065846772.

It is an arithmetic number, because the mean of its divisors is an integer number (172251087984).

Almost surely, 2^670872658427 is an apocalyptic number.

670872658427 is a deficient number, since it is larger than the sum of its proper divisors (18131693509).

670872658427 is a wasteful number, since it uses less digits than its factorization.

670872658427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18131693508.

The product of its (nonzero) digits is 63221760, while the sum is 62.

The spelling of 670872658427 in words is "six hundred seventy billion, eight hundred seventy-two million, six hundred fifty-eight thousand, four hundred twenty-seven".