684961475 has 12 divisors (see below), whose sum is σ = 926566440. Its totient is φ = 498153600.

The previous prime is 684961447. The next prime is 684961477. The reversal of 684961475 is 574169486.

It is not a de Polignac number, because 684961475 - 2⁸ = 684961219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684961477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1245110 + ... + 1245659.

It is an arithmetic number, because the mean of its divisors is an integer number (77213870).

Almost surely, 2^684961475 is an apocalyptic number.

684961475 is a deficient number, since it is larger than the sum of its proper divisors (241604965).

684961475 is a wasteful number, since it uses less digits than its factorization.

684961475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490790 (or 2490785 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 684961475 is about 26171.7686639631. The cubic root of 684961475 is about 881.4994558958.

The spelling of 684961475 in words is "six hundred eighty-four million, nine hundred sixty-one thousand, four hundred seventy-five".