670952659689 has 45 divisors (see below), whose sum is σ = 1085472069429. Its totient is φ = 412834968000.

The previous prime is 670952659633. The next prime is 670952659691. The reversal of 670952659689 is 986956259076.

The square root of 670952659689 is 819117.

It is a perfect power (a square), and thus also a powerful number.

670952659689 is a `hidden beast` number, since 6 + 7 + 0 + 9 + 5 + 26 + 596 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 136726155225 + 534226504464 = 369765^2 + 730908^2 .

It is a de Polignac number, because none of the positive numbers 2^k-670952659689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670912659689) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 95833189 + ... + 95840189.

Almost surely, 2^670952659689 is an apocalyptic number.

670952659689 is the 819117-th square number.

670952659689 is the 409559-th centered octagonal number.

It is an amenable number.

670952659689 is a deficient number, since it is larger than the sum of its proper divisors (414519409740).

670952659689 is an frugal number, since it uses more digits than its factorization.

670952659689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14040 (or 7017 counting only the distinct ones).

The product of its (nonzero) digits is 440899200, while the sum is 72.

The spelling of 670952659689 in words is "six hundred seventy billion, nine hundred fifty-two million, six hundred fifty-nine thousand, six hundred eighty-nine".