80864767 has 4 divisors (see below), whose sum is σ = 85621536. Its totient is φ = 76108000.

The previous prime is 80864761. The next prime is 80864809. The reversal of 80864767 is 76746808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80864767 - 2³ = 80864759 is a prime.

It is a super-2 number, since 2×80864767² = 13078221083928578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80864761) 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, 2378359 + ... + 2378392.

It is an arithmetic number, because the mean of its divisors is an integer number (21405384).

Almost surely, 2^80864767 is an apocalyptic number.

80864767 is a deficient number, since it is larger than the sum of its proper divisors (4756769).

80864767 is a wasteful number, since it uses less digits than its factorization.

80864767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756768.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 80864767 is about 8992.4839171388. The cubic root of 80864767 is about 432.4339471671.

The spelling of 80864767 in words is "eighty million, eight hundred sixty-four thousand, seven hundred sixty-seven".