328626457 has 2 divisors, whose sum is σ = 328626458. Its totient is φ = 328626456.

The previous prime is 328626449. The next prime is 328626479. The reversal of 328626457 is 754626823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307686681 + 20939776 = 17541^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 328626457 - 2³ = 328626449 is a prime.

It is not a weakly prime, because it can be changed into another prime (328626407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164313228 + 164313229.

It is an arithmetic number, because the mean of its divisors is an integer number (164313229).

Almost surely, 2^328626457 is an apocalyptic number.

It is an amenable number.

328626457 is a deficient number, since it is larger than the sum of its proper divisors (1).

328626457 is an equidigital number, since it uses as much as digits as its factorization.

328626457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 43.

The square root of 328626457 is about 18128.0571766530. The cubic root of 328626457 is about 690.0822257257.

The spelling of 328626457 in words is "three hundred twenty-eight million, six hundred twenty-six thousand, four hundred fifty-seven".