79760069 has 2 divisors, whose sum is σ = 79760070. Its totient is φ = 79760068.

The previous prime is 79760041. The next prime is 79760099. The reversal of 79760069 is 96006797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73444900 + 6315169 = 8570^2 + 2513^2 .

It is a cyclic number.

It is not a de Polignac number, because 79760069 - 2¹⁶ = 79694533 is a prime.

It is a super-2 number, since 2×79760069² = 12723337213769522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (79760029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39880034 + 39880035.

It is an arithmetic number, because the mean of its divisors is an integer number (39880035).

Almost surely, 2^79760069 is an apocalyptic number.

It is an amenable number.

79760069 is a deficient number, since it is larger than the sum of its proper divisors (1).

79760069 is an equidigital number, since it uses as much as digits as its factorization.

79760069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 79760069 is about 8930.8492877217. The cubic root of 79760069 is about 430.4557435902.

The spelling of 79760069 in words is "seventy-nine million, seven hundred sixty thousand, sixty-nine".