426490566 has 12 divisors (see below), whose sum is σ = 853082316. Its totient is φ = 142146660.

The previous prime is 426490553. The next prime is 426490567. The reversal of 426490566 is 665094624.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426490567) 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 5 ways as a sum of consecutive naturals, for example, 46371 + ... + 54801.

It is an arithmetic number, because the mean of its divisors is an integer number (71090193).

Almost surely, 2^426490566 is an apocalyptic number.

426490566 is an abundant number, since it is smaller than the sum of its proper divisors (426591750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426490566 is an frugal number, since it uses more digits than its factorization.

426490566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16867 (or 8436 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 426490566 is about 20651.6480214050. The cubic root of 426490566 is about 752.7252356821.

It can be divided in two parts, 4264 and 90566, that added together give a triangular number (94830 = T₄₃₅).

The spelling of 426490566 in words is "four hundred twenty-six million, four hundred ninety thousand, five hundred sixty-six".