39680687 has 8 divisors (see below), whose sum is σ = 41131200. Its totient is φ = 38250144.

The previous prime is 39680677. The next prime is 39680689. The reversal of 39680687 is 78608693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39680687 - 2¹⁸ = 39418543 is a prime.

It is a pancake number, because a pancake can be divided into 39680687 parts by 8908 straight cuts.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887 + ... + 8952.

It is an arithmetic number, because the mean of its divisors is an integer number (5141400).

Almost surely, 2^39680687 is an apocalyptic number.

39680687 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

39680687 is a deficient number, since it is larger than the sum of its proper divisors (1450513).

39680687 is a wasteful number, since it uses less digits than its factorization.

39680687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 39680687 is about 6299.2608296530. The cubic root of 39680687 is about 341.0827277547.

The spelling of 39680687 in words is "thirty-nine million, six hundred eighty thousand, six hundred eighty-seven".