79770745 has 4 divisors (see below), whose sum is σ = 95724900. Its totient is φ = 63816592.

The previous prime is 79770689. The next prime is 79770767. The reversal of 79770745 is 54707797.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53392249 + 26378496 = 7307^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 79770745 - 2¹¹ = 79768697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79770695 and 79770704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7977070 + ... + 7977079.

It is an arithmetic number, because the mean of its divisors is an integer number (23931225).

Almost surely, 2^79770745 is an apocalyptic number.

It is an amenable number.

79770745 is a deficient number, since it is larger than the sum of its proper divisors (15954155).

79770745 is a wasteful number, since it uses less digits than its factorization.

79770745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954154.

The product of its (nonzero) digits is 432180, while the sum is 46.

The square root of 79770745 is about 8931.4469712360. The cubic root of 79770745 is about 430.4749484402.

The spelling of 79770745 in words is "seventy-nine million, seven hundred seventy thousand, seven hundred forty-five".