220626634 has 16 divisors (see below), whose sum is σ = 340324200. Its totient is φ = 107193024.

The previous prime is 220626631. The next prime is 220626641. The reversal of 220626634 is 436626022.

It can be written as a sum of positive squares in 4 ways, for example, as 217651009 + 2975625 = 14753^2 + 1725^2 .

It is a super-2 number, since 2×220626634² = 97352223260339912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220626596 and 220626605.

It is not an unprimeable number, because it can be changed into a prime (220626631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77712 + ... + 80500.

Almost surely, 2^220626634 is an apocalyptic number.

220626634 is a deficient number, since it is larger than the sum of its proper divisors (119697566).

220626634 is a wasteful number, since it uses less digits than its factorization.

220626634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 220626634 is about 14853.5057814645. The cubic root of 220626634 is about 604.2536926044.

The spelling of 220626634 in words is "two hundred twenty million, six hundred twenty-six thousand, six hundred thirty-four".