685145337 has 4 divisors (see below), whose sum is σ = 913527120. Its totient is φ = 456763556.

The previous prime is 685145323. The next prime is 685145341. The reversal of 685145337 is 733541586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 685145337 - 2¹⁴ = 685128953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685145737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114190887 + ... + 114190892.

It is an arithmetic number, because the mean of its divisors is an integer number (228381780).

Almost surely, 2^685145337 is an apocalyptic number.

It is an amenable number.

685145337 is a deficient number, since it is larger than the sum of its proper divisors (228381783).

685145337 is a wasteful number, since it uses less digits than its factorization.

685145337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228381782.

The product of its digits is 302400, while the sum is 42.

The square root of 685145337 is about 26175.2810300100. The cubic root of 685145337 is about 881.5783215252.

The spelling of 685145337 in words is "six hundred eighty-five million, one hundred forty-five thousand, three hundred thirty-seven".