80662993 has 4 divisors (see below), whose sum is σ = 80681328. Its totient is φ = 80644660.

The previous prime is 80662991. The next prime is 80663027. The reversal of 80662993 is 39926608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80662993 - 2¹ = 80662991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80662991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830 + ... + 12832.

It is an arithmetic number, because the mean of its divisors is an integer number (20170332).

Almost surely, 2^80662993 is an apocalyptic number.

It is an amenable number.

80662993 is a deficient number, since it is larger than the sum of its proper divisors (18335).

80662993 is a wasteful number, since it uses less digits than its factorization.

80662993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18334.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 80662993 is about 8981.2578740397. The cubic root of 80662993 is about 432.0739774574.

The spelling of 80662993 in words is "eighty million, six hundred sixty-two thousand, nine hundred ninety-three".