39680685 has 48 divisors (see below), whose sum is σ = 77837760. Its totient is φ = 19232640.

The previous prime is 39680677. The next prime is 39680689. The reversal of 39680685 is 58608693.

It is not a de Polignac number, because 39680685 - 2³ = 39680677 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 39680685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39680689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11881 + ... + 14849.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^39680685 is an apocalyptic number.

It is an amenable number.

39680685 is a deficient number, since it is larger than the sum of its proper divisors (38157075).

39680685 is a wasteful number, since it uses less digits than its factorization.

39680685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 39680685 is about 6299.2606709042. The cubic root of 39680685 is about 341.0827220243.

The spelling of 39680685 in words is "thirty-nine million, six hundred eighty thousand, six hundred eighty-five".