670741537 has 2 divisors, whose sum is σ = 670741538. Its totient is φ = 670741536.

The previous prime is 670741507. The next prime is 670741541. The reversal of 670741537 is 735147076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639280656 + 31460881 = 25284^2 + 5609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670741537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670741537.

It is not a weakly prime, because it can be changed into another prime (670741507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335370768 + 335370769.

It is an arithmetic number, because the mean of its divisors is an integer number (335370769).

Almost surely, 2^670741537 is an apocalyptic number.

It is an amenable number.

670741537 is a deficient number, since it is larger than the sum of its proper divisors (1).

670741537 is an equidigital number, since it uses as much as digits as its factorization.

670741537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 670741537 is about 25898.6782867389. The cubic root of 670741537 is about 875.3567142036.

The spelling of 670741537 in words is "six hundred seventy million, seven hundred forty-one thousand, five hundred thirty-seven".