70146257 has 2 divisors, whose sum is σ = 70146258. Its totient is φ = 70146256.

The previous prime is 70146247. The next prime is 70146277. The reversal of 70146257 is 75264107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52765696 + 17380561 = 7264^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 70146257 - 2²⁶ = 3037393 is a prime.

It is a super-2 number, since 2×70146257² = 9840994742220098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70146227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35073128 + 35073129.

It is an arithmetic number, because the mean of its divisors is an integer number (35073129).

Almost surely, 2^70146257 is an apocalyptic number.

It is an amenable number.

70146257 is a deficient number, since it is larger than the sum of its proper divisors (1).

70146257 is an equidigital number, since it uses as much as digits as its factorization.

70146257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 70146257 is about 8375.3362320566. The cubic root of 70146257 is about 412.4153621268.

The spelling of 70146257 in words is "seventy million, one hundred forty-six thousand, two hundred fifty-seven".