457626643 has 2 divisors, whose sum is σ = 457626644. Its totient is φ = 457626642.

The previous prime is 457626601. The next prime is 457626649. The reversal of 457626643 is 346626754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 457626643 - 2²¹ = 455529491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 457626643.

It is not a weakly prime, because it can be changed into another prime (457626649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228813321 + 228813322.

It is an arithmetic number, because the mean of its divisors is an integer number (228813322).

Almost surely, 2^457626643 is an apocalyptic number.

457626643 is a deficient number, since it is larger than the sum of its proper divisors (1).

457626643 is an equidigital number, since it uses as much as digits as its factorization.

457626643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 43.

The square root of 457626643 is about 21392.2098671456. The cubic root of 457626643 is about 770.6143649136.

The spelling of 457626643 in words is "four hundred fifty-seven million, six hundred twenty-six thousand, six hundred forty-three".