683320645 has 16 divisors (see below), whose sum is σ = 942041088. Its totient is φ = 466104960.

The previous prime is 683320619. The next prime is 683320667. The reversal of 683320645 is 546023386.

It is not a de Polignac number, because 683320645 - 2¹⁵ = 683287877 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 44424 + ... + 57793.

It is an arithmetic number, because the mean of its divisors is an integer number (58877568).

Almost surely, 2^683320645 is an apocalyptic number.

It is an amenable number.

683320645 is a deficient number, since it is larger than the sum of its proper divisors (258720443).

683320645 is a wasteful number, since it uses less digits than its factorization.

683320645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102420.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 683320645 is about 26140.4025408944. The cubic root of 683320645 is about 880.7950137284.

The spelling of 683320645 in words is "six hundred eighty-three million, three hundred twenty thousand, six hundred forty-five".