80779963 has 24 divisors (see below), whose sum is σ = 95855760. Its totient is φ = 67795200.

The previous prime is 80779961. The next prime is 80779969. The reversal of 80779963 is 36997708.

It is not a de Polignac number, because 80779963 - 2¹ = 80779961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80779961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93831 + ... + 94687.

It is an arithmetic number, because the mean of its divisors is an integer number (3993990).

Almost surely, 2^80779963 is an apocalyptic number.

80779963 is a deficient number, since it is larger than the sum of its proper divisors (15075797).

80779963 is a wasteful number, since it uses less digits than its factorization.

80779963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 80779963 is about 8987.7674090955. The cubic root of 80779963 is about 432.2827278050.

The spelling of 80779963 in words is "eighty million, seven hundred seventy-nine thousand, nine hundred sixty-three".