620917437226 has 4 divisors (see below), whose sum is σ = 931376155842. Its totient is φ = 310458718612.

The previous prime is 620917437187. The next prime is 620917437263. The reversal of 620917437226 is 622734719026.

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

It can be written as a sum of positive squares in only one way, i.e., 574692867225 + 46224570001 = 758085^2 + 214999^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 620917437226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155229359305 + ... + 155229359308.

Almost surely, 2^620917437226 is an apocalyptic number.

620917437226 is a deficient number, since it is larger than the sum of its proper divisors (310458718616).

620917437226 is a wasteful number, since it uses less digits than its factorization.

620917437226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310458718615.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 620917437226 in words is "six hundred twenty billion, nine hundred seventeen million, four hundred thirty-seven thousand, two hundred twenty-six".