426566257 has 8 divisors (see below), whose sum is σ = 479352384. Its totient is φ = 376633488.

The previous prime is 426566237. The next prime is 426566279. The reversal of 426566257 is 752665624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426566257 is a prime.

It is a super-2 number, since 2×426566257² = 363917543221980098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426566237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713023 + ... + 713620.

It is an arithmetic number, because the mean of its divisors is an integer number (59919048).

Almost surely, 2^426566257 is an apocalyptic number.

It is an amenable number.

426566257 is a deficient number, since it is larger than the sum of its proper divisors (52786127).

426566257 is a wasteful number, since it uses less digits than its factorization.

426566257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426679.

The product of its digits is 604800, while the sum is 43.

The square root of 426566257 is about 20653.4805057162. The cubic root of 426566257 is about 752.7697627754.

The spelling of 426566257 in words is "four hundred twenty-six million, five hundred sixty-six thousand, two hundred fifty-seven".