76799669 has 2 divisors, whose sum is σ = 76799670. Its totient is φ = 76799668.

The previous prime is 76799647. The next prime is 76799687. The reversal of 76799669 is 96699767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76562500 + 237169 = 8750^2 + 487^2 .

It is an emirp because it is prime and its reverse (96699767) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76799669 is a prime.

It is a super-2 number, since 2×76799669² = 11796378317019122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76799609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38399834 + 38399835.

It is an arithmetic number, because the mean of its divisors is an integer number (38399835).

Almost surely, 2^76799669 is an apocalyptic number.

It is an amenable number.

76799669 is a deficient number, since it is larger than the sum of its proper divisors (1).

76799669 is an equidigital number, since it uses as much as digits as its factorization.

76799669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 59.

The square root of 76799669 is about 8763.5420350450. The cubic root of 76799669 is about 425.0628170125.

The spelling of 76799669 in words is "seventy-six million, seven hundred ninety-nine thousand, six hundred sixty-nine".