79746145 has 4 divisors (see below), whose sum is σ = 95695380. Its totient is φ = 63796912.

The previous prime is 79746127. The next prime is 79746157. The reversal of 79746145 is 54164797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54164797 = 4637 ⋅11681.

It can be written as a sum of positive squares in 2 ways, for example, as 36397089 + 43349056 = 6033^2 + 6584^2 .

It is a cyclic number.

It is not a de Polignac number, because 79746145 - 2¹¹ = 79744097 is a prime.

It is a super-2 number, since 2×79746145² = 12718895284722050, which contains 22 as substring.

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, 7974610 + ... + 7974619.

It is an arithmetic number, because the mean of its divisors is an integer number (23923845).

Almost surely, 2^79746145 is an apocalyptic number.

It is an amenable number.

79746145 is a deficient number, since it is larger than the sum of its proper divisors (15949235).

79746145 is a wasteful number, since it uses less digits than its factorization.

79746145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15949234.

The product of its digits is 211680, while the sum is 43.

The square root of 79746145 is about 8930.0697085745. The cubic root of 79746145 is about 430.4306934004.

The spelling of 79746145 in words is "seventy-nine million, seven hundred forty-six thousand, one hundred forty-five".