39680677 has 2 divisors, whose sum is σ = 39680678. Its totient is φ = 39680676.

The previous prime is 39680657. The next prime is 39680689. The reversal of 39680677 is 77608693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26532801 + 13147876 = 5151^2 + 3626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39680677 is a prime.

It is a super-2 number, since 2×39680677² = 3149112254356658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39680617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19840338 + 19840339.

It is an arithmetic number, because the mean of its divisors is an integer number (19840339).

Almost surely, 2^39680677 is an apocalyptic number.

It is an amenable number.

39680677 is a deficient number, since it is larger than the sum of its proper divisors (1).

39680677 is an equidigital number, since it uses as much as digits as its factorization.

39680677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 39680677 is about 6299.2600359090. The cubic root of 39680677 is about 341.0826991024.

The spelling of 39680677 in words is "thirty-nine million, six hundred eighty thousand, six hundred seventy-seven".