426636502 has 4 divisors (see below), whose sum is σ = 639954756. Its totient is φ = 213318250.

The previous prime is 426636481. The next prime is 426636521. The reversal of 426636502 is 205636624.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106659124 + ... + 106659127.

It is an arithmetic number, because the mean of its divisors is an integer number (159988689).

Almost surely, 2^426636502 is an apocalyptic number.

426636502 is a deficient number, since it is larger than the sum of its proper divisors (213318254).

426636502 is a wasteful number, since it uses less digits than its factorization.

426636502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213318253.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 426636502 is about 20655.1809965442. The cubic root of 426636502 is about 752.8110814129.

The spelling of 426636502 in words is "four hundred twenty-six million, six hundred thirty-six thousand, five hundred two".