426603631 has 4 divisors (see below), whose sum is σ = 435680352. Its totient is φ = 417526912.

The previous prime is 426603629. The next prime is 426603703. The reversal of 426603631 is 136306624.

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

It is a cyclic number.

It is not a de Polignac number, because 426603631 - 2¹ = 426603629 is a prime.

It is a super-2 number, since 2×426603631² = 363981315964768322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 426603593 and 426603602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426603131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4538290 + ... + 4538383.

It is an arithmetic number, because the mean of its divisors is an integer number (108920088).

Almost surely, 2^426603631 is an apocalyptic number.

426603631 is a deficient number, since it is larger than the sum of its proper divisors (9076721).

426603631 is an equidigital number, since it uses as much as digits as its factorization.

426603631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9076720.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 426603631 is about 20654.3852728664. The cubic root of 426603631 is about 752.7917470080.

The spelling of 426603631 in words is "four hundred twenty-six million, six hundred three thousand, six hundred thirty-one".