76668881 has 4 divisors (see below), whose sum is σ = 76952064. Its totient is φ = 76385700.

The previous prime is 76668877. The next prime is 76668901. The reversal of 76668881 is 18886667.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18886667 = 59 ⋅320113.

It is a cyclic number.

It is not a de Polignac number, because 76668881 - 2² = 76668877 is a prime.

It is a super-2 number, since 2×76668881² = 11756234627584322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76668841) 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, 141185 + ... + 141726.

It is an arithmetic number, because the mean of its divisors is an integer number (19238016).

Almost surely, 2^76668881 is an apocalyptic number.

It is an amenable number.

76668881 is a deficient number, since it is larger than the sum of its proper divisors (283183).

76668881 is a wasteful number, since it uses less digits than its factorization.

76668881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283182.

The product of its digits is 774144, while the sum is 50.

The square root of 76668881 is about 8756.0768041401. The cubic root of 76668881 is about 424.8213893074.

The spelling of 76668881 in words is "seventy-six million, six hundred sixty-eight thousand, eight hundred eighty-one".