39706680 has 64 divisors (see below), whose sum is σ = 128288160. Its totient is φ = 9773568.

The previous prime is 39706651. The next prime is 39706721. The reversal of 39706680 is 8660793.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 11167 + ... + 14286.

Almost surely, 2^39706680 is an apocalyptic number.

39706680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39706680 is an abundant number, since it is smaller than the sum of its proper divisors (88581480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39706680 is a wasteful number, since it uses less digits than its factorization.

39706680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25480 (or 25476 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 39706680 is about 6301.3236704680. The cubic root of 39706680 is about 341.1571873879.

The spelling of 39706680 in words is "thirty-nine million, seven hundred six thousand, six hundred eighty".