80766169 has 27 divisors (see below), whose sum is σ = 95923989. Its totient is φ = 67941720.

The previous prime is 80766151. The next prime is 80766173. The reversal of 80766169 is 96166708.

The square root of 80766169 is 8987.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 80766169 - 2⁵ = 80766137 is a prime.

It is a super-2 number, since 2×80766169² = 13046348109873122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (80766149) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1878262 + ... + 1878304.

Almost surely, 2^80766169 is an apocalyptic number.

80766169 is the 8987-th square number.

80766169 is the 4494-th centered octagonal number.

It is an amenable number.

80766169 is a deficient number, since it is larger than the sum of its proper divisors (15157820).

80766169 is a wasteful number, since it uses less digits than its factorization.

80766169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The cubic root of 80766169 is about 432.2581208473.

The spelling of 80766169 in words is "eighty million, seven hundred sixty-six thousand, one hundred sixty-nine".