76228681 has 8 divisors (see below), whose sum is σ = 78170184. Its totient is φ = 74305920.

The previous prime is 76228679. The next prime is 76228699. The reversal of 76228681 is 18682267.

It can be written as a sum of positive squares in 4 ways, for example, as 7338681 + 68890000 = 2709^2 + 8300^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76228681 - 2¹ = 76228679 is a prime.

It is a super-2 number, since 2×76228681² = 11621623613999522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76228651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (9771273).

Almost surely, 2^76228681 is an apocalyptic number.

It is an amenable number.

76228681 is a deficient number, since it is larger than the sum of its proper divisors (1941503).

76228681 is a wasteful number, since it uses less digits than its factorization.

76228681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371.

The product of its digits is 64512, while the sum is 40.

The square root of 76228681 is about 8730.9037905591. The cubic root of 76228681 is about 424.0067805519.

The spelling of 76228681 in words is "seventy-six million, two hundred twenty-eight thousand, six hundred eighty-one".