79770707 has 4 divisors (see below), whose sum is σ = 81716376. Its totient is φ = 77825040.

The previous prime is 79770689. The next prime is 79770767. The reversal of 79770707 is 70707797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70707797 = 19 ⋅3721463.

It is a cyclic number.

It is not a de Polignac number, because 79770707 - 2¹² = 79766611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79770767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972773 + ... + 972854.

It is an arithmetic number, because the mean of its divisors is an integer number (20429094).

Almost surely, 2^79770707 is an apocalyptic number.

79770707 is a deficient number, since it is larger than the sum of its proper divisors (1945669).

79770707 is a wasteful number, since it uses less digits than its factorization.

79770707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945668.

The product of its (nonzero) digits is 151263, while the sum is 44.

The square root of 79770707 is about 8931.4448439208. Note that the first 3 decimals coincide. The cubic root of 79770707 is about 430.4748800858.

The spelling of 79770707 in words is "seventy-nine million, seven hundred seventy thousand, seven hundred seven".