76680381 has 4 divisors (see below), whose sum is σ = 102240512. Its totient is φ = 51120252.

The previous prime is 76680349. The next prime is 76680389. The reversal of 76680381 is 18308667.

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 not a de Polignac number, because 76680381 - 2⁵ = 76680349 is a prime.

It is a super-2 number, since 2×76680381² = 11759761660610322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76680389) 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, 12780061 + ... + 12780066.

It is an arithmetic number, because the mean of its divisors is an integer number (25560128).

Almost surely, 2^76680381 is an apocalyptic number.

It is an amenable number.

76680381 is a deficient number, since it is larger than the sum of its proper divisors (25560131).

76680381 is a wasteful number, since it uses less digits than its factorization.

76680381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25560130.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 76680381 is about 8756.7334663104. The cubic root of 76680381 is about 424.8426287014.

The spelling of 76680381 in words is "seventy-six million, six hundred eighty thousand, three hundred eighty-one".