685190475 has 24 divisors (see below), whose sum is σ = 1258721520. Its totient is φ = 365434560.

The previous prime is 685190461. The next prime is 685190477. The reversal of 685190475 is 574091586.

685190475 is a `hidden beast` number, since 68 + 519 + 0 + 4 + 75 = 666.

It is not a de Polignac number, because 685190475 - 2⁶ = 685190411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 685190475.

It is not an unprimeable number, because it can be changed into a prime (685190477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 506874 + ... + 508223.

It is an arithmetic number, because the mean of its divisors is an integer number (52446730).

Almost surely, 2^685190475 is an apocalyptic number.

685190475 is a deficient number, since it is larger than the sum of its proper divisors (573531045).

685190475 is a wasteful number, since it uses less digits than its factorization.

685190475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015116 (or 1015105 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 685190475 is about 26176.1432415091. The cubic root of 685190475 is about 881.5976808281.

The spelling of 685190475 in words is "six hundred eighty-five million, one hundred ninety thousand, four hundred seventy-five".