670905136 has 40 divisors (see below), whose sum is σ = 1501470864. Its totient is φ = 287016960.

The previous prime is 670905133. The next prime is 670905139. The reversal of 670905136 is 631509076.

It is an interprime number because it is at equal distance from previous prime (670905133) and next prime (670905139).

It is a super-2 number, since 2×670905136² = 900227403022356992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 670905095 and 670905104.

It is not an unprimeable number, because it can be changed into a prime (670905133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109125 + ... + 115108.

Almost surely, 2^670905136 is an apocalyptic number.

It is an amenable number.

670905136 is an abundant number, since it is smaller than the sum of its proper divisors (830565728).

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

670905136 is a wasteful number, since it uses less digits than its factorization.

670905136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224269 (or 224263 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 670905136 is about 25901.8365372033. The cubic root of 670905136 is about 875.4278771547.

The spelling of 670905136 in words is "six hundred seventy million, nine hundred five thousand, one hundred thirty-six".