456842657 has 4 divisors (see below), whose sum is σ = 459483540. Its totient is φ = 454201776.

The previous prime is 456842609. The next prime is 456842671. The reversal of 456842657 is 756248654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 233967616 + 222875041 = 15296^2 + 14929^2 .

It is a cyclic number.

It is not a de Polignac number, because 456842657 - 2¹⁰ = 456841633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (456842557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320182 + ... + 1320527.

It is an arithmetic number, because the mean of its divisors is an integer number (114870885).

Almost surely, 2^456842657 is an apocalyptic number.

It is an amenable number.

456842657 is a deficient number, since it is larger than the sum of its proper divisors (2640883).

456842657 is a wasteful number, since it uses less digits than its factorization.

456842657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640882.

The product of its digits is 1612800, while the sum is 47.

The square root of 456842657 is about 21373.8779120683. The cubic root of 456842657 is about 770.1740524063.

The spelling of 456842657 in words is "four hundred fifty-six million, eight hundred forty-two thousand, six hundred fifty-seven".