80668699 has 10 divisors (see below), whose sum is σ = 85287820. Its totient is φ = 76299516.

The previous prime is 80668697. The next prime is 80668711. The reversal of 80668699 is 99686608.

It is not a de Polignac number, because 80668699 - 2¹ = 80668697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80668697) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 130012 + ... + 130630.

It is an arithmetic number, because the mean of its divisors is an integer number (8528782).

Almost surely, 2^80668699 is an apocalyptic number.

80668699 is a deficient number, since it is larger than the sum of its proper divisors (4619121).

80668699 is an frugal number, since it uses more digits than its factorization.

80668699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 80668699 is about 8981.5755299391. The cubic root of 80668699 is about 432.0841653428.

The spelling of 80668699 in words is "eighty million, six hundred sixty-eight thousand, six hundred ninety-nine".