457668245 has 4 divisors (see below), whose sum is σ = 549201900. Its totient is φ = 366134592.

The previous prime is 457668217. The next prime is 457668247. The reversal of 457668245 is 542866754.

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 308388721 + 149279524 = 17561^2 + 12218^2 .

It is a cyclic number.

It is not a de Polignac number, because 457668245 - 2⁸ = 457667989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 457668245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457668247) 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, 45766820 + ... + 45766829.

It is an arithmetic number, because the mean of its divisors is an integer number (137300475).

Almost surely, 2^457668245 is an apocalyptic number.

It is an amenable number.

457668245 is a deficient number, since it is larger than the sum of its proper divisors (91533655).

457668245 is an equidigital number, since it uses as much as digits as its factorization.

457668245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91533654.

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

The square root of 457668245 is about 21393.1822083579. The cubic root of 457668245 is about 770.6377159196.

The spelling of 457668245 in words is "four hundred fifty-seven million, six hundred sixty-eight thousand, two hundred forty-five".