685362145 has 16 divisors (see below), whose sum is σ = 900223632. Its totient is φ = 497813760.

The previous prime is 685362127. The next prime is 685362151. The reversal of 685362145 is 541263586.

It can be written as a sum of positive squares in 8 ways, for example, as 393943104 + 291419041 = 19848^2 + 17071^2 .

It is not a de Polignac number, because 685362145 - 2²³ = 676973537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685362098 and 685362107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82462 + ... + 90391.

It is an arithmetic number, because the mean of its divisors is an integer number (56263977).

Almost surely, 2^685362145 is an apocalyptic number.

685362145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

685362145 is a deficient number, since it is larger than the sum of its proper divisors (214861487).

685362145 is a wasteful number, since it uses less digits than its factorization.

685362145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172932.

The product of its digits is 172800, while the sum is 40.

The square root of 685362145 is about 26179.4221670380. The cubic root of 685362145 is about 881.6713008612.

The spelling of 685362145 in words is "six hundred eighty-five million, three hundred sixty-two thousand, one hundred forty-five".