76700081 has 4 divisors (see below), whose sum is σ = 76719972. Its totient is φ = 76680192.

The previous prime is 76700077. The next prime is 76700087. The reversal of 76700081 is 18000767.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75411856 + 1288225 = 8684^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 76700081 - 2² = 76700077 is a prime.

It is a super-2 number, since 2×76700081² = 11765804850813122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76700087) 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, 2096 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (19179993).

Almost surely, 2^76700081 is an apocalyptic number.

It is an amenable number.

76700081 is a deficient number, since it is larger than the sum of its proper divisors (19891).

76700081 is a wasteful number, since it uses less digits than its factorization.

76700081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19890.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 76700081 is about 8757.8582427441. The cubic root of 76700081 is about 424.8790077728.

The spelling of 76700081 in words is "seventy-six million, seven hundred thousand, eighty-one".