79751643 has 4 divisors (see below), whose sum is σ = 106335528. Its totient is φ = 53167760.

The previous prime is 79751611. The next prime is 79751663. The reversal of 79751643 is 34615797.

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

It is a cyclic number.

It is not a de Polignac number, because 79751643 - 2⁵ = 79751611 is a prime.

It is a super-2 number, since 2×79751643² = 12720649122398898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79751595 and 79751604.

It is not an unprimeable number, because it can be changed into a prime (79751663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13291938 + ... + 13291943.

It is an arithmetic number, because the mean of its divisors is an integer number (26583882).

Almost surely, 2^79751643 is an apocalyptic number.

79751643 is a deficient number, since it is larger than the sum of its proper divisors (26583885).

79751643 is a wasteful number, since it uses less digits than its factorization.

79751643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26583884.

The product of its digits is 158760, while the sum is 42.

The square root of 79751643 is about 8930.3775396116. The cubic root of 79751643 is about 430.4405850116.

The spelling of 79751643 in words is "seventy-nine million, seven hundred fifty-one thousand, six hundred forty-three".