457897691 has 2 divisors, whose sum is σ = 457897692. Its totient is φ = 457897690.

The previous prime is 457897577. The next prime is 457897697. The reversal of 457897691 is 196798754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 457897691 - 2¹⁰ = 457896667 is a prime.

It is not a weakly prime, because it can be changed into another prime (457897697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228948845 + 228948846.

It is an arithmetic number, because the mean of its divisors is an integer number (228948846).

Almost surely, 2^457897691 is an apocalyptic number.

457897691 is a deficient number, since it is larger than the sum of its proper divisors (1).

457897691 is an equidigital number, since it uses as much as digits as its factorization.

457897691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 457897691 is about 21398.5441327208. The cubic root of 457897691 is about 770.7664774572.

The spelling of 457897691 in words is "four hundred fifty-seven million, eight hundred ninety-seven thousand, six hundred ninety-one".