670197757 has 4 divisors (see below), whose sum is σ = 670400640. Its totient is φ = 669994876.

The previous prime is 670197709. The next prime is 670197763. The reversal of 670197757 is 757791076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670197757 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 670197757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670197707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96403 + ... + 103120.

It is an arithmetic number, because the mean of its divisors is an integer number (167600160).

Almost surely, 2^670197757 is an apocalyptic number.

It is an amenable number.

670197757 is a deficient number, since it is larger than the sum of its proper divisors (202883).

670197757 is a wasteful number, since it uses less digits than its factorization.

670197757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202882.

The product of its (nonzero) digits is 648270, while the sum is 49.

The square root of 670197757 is about 25888.1779389744. The cubic root of 670197757 is about 875.1200954071.

The spelling of 670197757 in words is "six hundred seventy million, one hundred ninety-seven thousand, seven hundred fifty-seven".