76865629 has 2 divisors, whose sum is σ = 76865630. Its totient is φ = 76865628.

The previous prime is 76865623. The next prime is 76865669. The reversal of 76865629 is 92656867.

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., 63920025 + 12945604 = 7995^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 76865629 - 2⁵ = 76865597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76865623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38432814 + 38432815.

It is an arithmetic number, because the mean of its divisors is an integer number (38432815).

Almost surely, 2^76865629 is an apocalyptic number.

It is an amenable number.

76865629 is a deficient number, since it is larger than the sum of its proper divisors (1).

76865629 is an equidigital number, since it uses as much as digits as its factorization.

76865629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 76865629 is about 8767.3045458681. The cubic root of 76865629 is about 425.1844717060.

The spelling of 76865629 in words is "seventy-six million, eight hundred sixty-five thousand, six hundred twenty-nine".