670750605 has 32 divisors (see below), whose sum is σ = 1362796800. Its totient is φ = 306628416.

The previous prime is 670750603. The next prime is 670750609. The reversal of 670750605 is 506057076.

It is not a de Polignac number, because 670750605 - 2¹ = 670750603 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 670750605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670750603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353950 + ... + 355839.

It is an arithmetic number, because the mean of its divisors is an integer number (42587400).

Almost surely, 2^670750605 is an apocalyptic number.

It is an amenable number.

670750605 is an abundant number, since it is smaller than the sum of its proper divisors (692046195).

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

670750605 is a wasteful number, since it uses less digits than its factorization.

670750605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709810 (or 709804 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 670750605 is about 25898.8533529962. The cubic root of 670750605 is about 875.3606589416.

The spelling of 670750605 in words is "six hundred seventy million, seven hundred fifty thousand, six hundred five".