685941790226 has 32 divisors (see below), whose sum is σ = 1283150730240. Its totient is φ = 267177027600.

The previous prime is 685941790201. The next prime is 685941790267. The reversal of 685941790226 is 622097149586.

It is a happy number.

It is a super-2 number, since 2×685941790226² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41336 + ... + 1172003.

It is an arithmetic number, because the mean of its divisors is an integer number (40098460320).

Almost surely, 2^685941790226 is an apocalyptic number.

685941790226 is a deficient number, since it is larger than the sum of its proper divisors (597208940014).

685941790226 is a wasteful number, since it uses less digits than its factorization.

685941790226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217030.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 685941790226 in words is "six hundred eighty-five billion, nine hundred forty-one million, seven hundred ninety thousand, two hundred twenty-six".