685446061377 has 32 divisors (see below), whose sum is σ = 1151189673984. Its totient is φ = 352404979200.

The previous prime is 685446061369. The next prime is 685446061427. The reversal of 685446061377 is 773160644586.

It is not a de Polignac number, because 685446061377 - 2³ = 685446061369 is a prime.

It is a super-2 number, since 2×685446061377² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685446061577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15272949 + ... + 15317762.

It is an arithmetic number, because the mean of its divisors is an integer number (35974677312).

Almost surely, 2^685446061377 is an apocalyptic number.

It is an amenable number.

685446061377 is a deficient number, since it is larger than the sum of its proper divisors (465743612607).

685446061377 is a wasteful number, since it uses less digits than its factorization.

685446061377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30590829.

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 685446061377 in words is "six hundred eighty-five billion, four hundred forty-six million, sixty-one thousand, three hundred seventy-seven".