80697769 has 4 divisors (see below), whose sum is σ = 84945040. Its totient is φ = 76450500.

The previous prime is 80697763. The next prime is 80697779. The reversal of 80697769 is 96779608.

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 80697769 - 2⁵ = 80697737 is a prime.

It is a super-2 number, since 2×80697769² = 13024259843154722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80697763) 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, 2123607 + ... + 2123644.

It is an arithmetic number, because the mean of its divisors is an integer number (21236260).

Almost surely, 2^80697769 is an apocalyptic number.

It is an amenable number.

80697769 is a deficient number, since it is larger than the sum of its proper divisors (4247271).

80697769 is a wasteful number, since it uses less digits than its factorization.

80697769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247270.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 80697769 is about 8983.1936971213. The cubic root of 80697769 is about 432.1360614658.

The spelling of 80697769 in words is "eighty million, six hundred ninety-seven thousand, seven hundred sixty-nine".