635422613956 has 243 divisors, whose sum is σ = 1331601033357. Its totient is φ = 265158653760.

The previous prime is 635422613953. The next prime is 635422613971. The reversal of 635422613956 is 659316224536.

The square root of 635422613956 is 797134.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 93997428100 + 541425185856 = 306590^2 + 735816^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635422613953) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 14777270071 + ... + 14777270113.

Almost surely, 2^635422613956 is an apocalyptic number.

635422613956 is the 797134-th square number.

It is an amenable number.

635422613956 is an abundant number, since it is smaller than the sum of its proper divisors (696178419401).

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

635422613956 is a wasteful number, since it uses less digits than its factorization.

635422613956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 112 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 52.

The spelling of 635422613956 in words is "six hundred thirty-five billion, four hundred twenty-two million, six hundred thirteen thousand, nine hundred fifty-six".