39764681 has 8 divisors (see below), whose sum is σ = 44198784. Its totient is φ = 35467120.

The previous prime is 39764651. The next prime is 39764687. The reversal of 39764681 is 18646793.

39764681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39764681 - 2¹⁰ = 39763657 is a prime.

It is a super-2 number, since 2×39764681² = 3162459710063522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39764687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33521 + ... + 34686.

It is an arithmetic number, because the mean of its divisors is an integer number (5524848).

Almost surely, 2^39764681 is an apocalyptic number.

It is an amenable number.

39764681 is a deficient number, since it is larger than the sum of its proper divisors (4434103).

39764681 is a wasteful number, since it uses less digits than its factorization.

39764681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68271.

The product of its digits is 217728, while the sum is 44.

The square root of 39764681 is about 6305.9242780103. The cubic root of 39764681 is about 341.3232201653.

The spelling of 39764681 in words is "thirty-nine million, seven hundred sixty-four thousand, six hundred eighty-one".