170628457 has 2 divisors, whose sum is σ = 170628458. Its totient is φ = 170628456.

The previous prime is 170628443. The next prime is 170628481. The reversal of 170628457 is 754826071.

170628457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169416256 + 1212201 = 13016^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 170628457 - 2²³ = 162239849 is a prime.

It is a super-2 number, since 2×170628457² = 58228140676401698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170629457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85314228 + 85314229.

It is an arithmetic number, because the mean of its divisors is an integer number (85314229).

Almost surely, 2^170628457 is an apocalyptic number.

It is an amenable number.

170628457 is a deficient number, since it is larger than the sum of its proper divisors (1).

170628457 is an equidigital number, since it uses as much as digits as its factorization.

170628457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 170628457 is about 13062.4828038164. The cubic root of 170628457 is about 554.6476209171.

The spelling of 170628457 in words is "one hundred seventy million, six hundred twenty-eight thousand, four hundred fifty-seven".