660670151 has 2 divisors, whose sum is σ = 660670152. Its totient is φ = 660670150.

The previous prime is 660670139. The next prime is 660670169. The reversal of 660670151 is 151076066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660670151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660670111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330335075 + 330335076.

It is an arithmetic number, because the mean of its divisors is an integer number (330335076).

Almost surely, 2^660670151 is an apocalyptic number.

660670151 is a deficient number, since it is larger than the sum of its proper divisors (1).

660670151 is an equidigital number, since it uses as much as digits as its factorization.

660670151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 660670151 is about 25703.5046443087. The cubic root of 660670151 is about 870.9533526900.

The spelling of 660670151 in words is "six hundred sixty million, six hundred seventy thousand, one hundred fifty-one".