426634633 has 4 divisors (see below), whose sum is σ = 426677908. Its totient is φ = 426591360.

The previous prime is 426634619. The next prime is 426634639. The reversal of 426634633 is 336436624.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 294568569 + 132066064 = 17163^2 + 11492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426634633 is a prime.

It is a super-2 number, since 2×426634633² = 364034220150089378, 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 = 426634592 and 426634601.

It is not an unprimeable number, because it can be changed into a prime (426634639) 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, 1153 + ... + 29233.

It is an arithmetic number, because the mean of its divisors is an integer number (106669477).

Almost surely, 2^426634633 is an apocalyptic number.

It is an amenable number.

426634633 is a deficient number, since it is larger than the sum of its proper divisors (43275).

426634633 is a wasteful number, since it uses less digits than its factorization.

426634633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43274.

The product of its digits is 186624, while the sum is 37.

The square root of 426634633 is about 20655.1357536086. The cubic root of 426634633 is about 752.8099821118.

The spelling of 426634633 in words is "four hundred twenty-six million, six hundred thirty-four thousand, six hundred thirty-three".