79698545 has 4 divisors (see below), whose sum is σ = 95638260. Its totient is φ = 63758832.

The previous prime is 79698529. The next prime is 79698571. The reversal of 79698545 is 54589697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54589697 = 5281 ⋅10337.

It can be written as a sum of positive squares in 2 ways, for example, as 14799409 + 64899136 = 3847^2 + 8056^2 .

It is a cyclic number.

It is not a de Polignac number, because 79698545 - 2⁴ = 79698529 is a prime.

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, 7969850 + ... + 7969859.

It is an arithmetic number, because the mean of its divisors is an integer number (23909565).

Almost surely, 2^79698545 is an apocalyptic number.

It is an amenable number.

79698545 is a deficient number, since it is larger than the sum of its proper divisors (15939715).

79698545 is a wasteful number, since it uses less digits than its factorization.

79698545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15939714.

The product of its digits is 2721600, while the sum is 53.

The square root of 79698545 is about 8927.4041579846. The cubic root of 79698545 is about 430.3450358478.

The spelling of 79698545 in words is "seventy-nine million, six hundred ninety-eight thousand, five hundred forty-five".