670157149 has 2 divisors, whose sum is σ = 670157150. Its totient is φ = 670157148.

The previous prime is 670157087. The next prime is 670157171. The reversal of 670157149 is 941751076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624500100 + 45657049 = 24990^2 + 6757^2 .

It is a cyclic number.

It is not a de Polignac number, because 670157149 - 2⁹ = 670156637 is a prime.

It is a super-2 number, since 2×670157149² = 898221208711616402, which contains 22 as substring.

It is equal to p_34786129 and since 670157149 and 34786129 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670157849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335078574 + 335078575.

It is an arithmetic number, because the mean of its divisors is an integer number (335078575).

Almost surely, 2^670157149 is an apocalyptic number.

It is an amenable number.

670157149 is a deficient number, since it is larger than the sum of its proper divisors (1).

670157149 is an equidigital number, since it uses as much as digits as its factorization.

670157149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 670157149 is about 25887.3936308776. The cubic root of 670157149 is about 875.1024202288.

The spelling of 670157149 in words is "six hundred seventy million, one hundred fifty-seven thousand, one hundred forty-nine".