76223681 has 2 divisors, whose sum is σ = 76223682. Its totient is φ = 76223680.

The previous prime is 76223647. The next prime is 76223729. The reversal of 76223681 is 18632267.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 255025 = 8716^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 76223681 - 2⁶ = 76223617 is a prime.

It is a super-2 number, since 2×76223681² = 11620099090379522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76223621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38111840 + 38111841.

It is an arithmetic number, because the mean of its divisors is an integer number (38111841).

Almost surely, 2^76223681 is an apocalyptic number.

It is an amenable number.

76223681 is a deficient number, since it is larger than the sum of its proper divisors (1).

76223681 is an equidigital number, since it uses as much as digits as its factorization.

76223681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 76223681 is about 8730.6174466644. The cubic root of 76223681 is about 423.9975098495.

The spelling of 76223681 in words is "seventy-six million, two hundred twenty-three thousand, six hundred eighty-one".