670290961 has 2 divisors, whose sum is σ = 670290962. Its totient is φ = 670290960.

The previous prime is 670290913. The next prime is 670290983. The reversal of 670290961 is 169092076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607326736 + 62964225 = 24644^2 + 7935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670290961 is a prime.

It is not a weakly prime, because it can be changed into another prime (670290991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335145480 + 335145481.

It is an arithmetic number, because the mean of its divisors is an integer number (335145481).

Almost surely, 2^670290961 is an apocalyptic number.

It is an amenable number.

670290961 is a deficient number, since it is larger than the sum of its proper divisors (1).

670290961 is an equidigital number, since it uses as much as digits as its factorization.

670290961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 670290961 is about 25889.9780030807. The cubic root of 670290961 is about 875.1606610022.

The spelling of 670290961 in words is "six hundred seventy million, two hundred ninety thousand, nine hundred sixty-one".