79268641 has 2 divisors, whose sum is σ = 79268642. Its totient is φ = 79268640.

The previous prime is 79268639. The next prime is 79268677. The reversal of 79268641 is 14686297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 18740241 = 7780^2 + 4329^2 .

It is a cyclic number.

It is not a de Polignac number, because 79268641 - 2¹ = 79268639 is a prime.

Together with 79268639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79268141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39634320 + 39634321.

It is an arithmetic number, because the mean of its divisors is an integer number (39634321).

Almost surely, 2^79268641 is an apocalyptic number.

It is an amenable number.

79268641 is a deficient number, since it is larger than the sum of its proper divisors (1).

79268641 is an equidigital number, since it uses as much as digits as its factorization.

79268641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 79268641 is about 8903.2938286906. The cubic root of 79268641 is about 429.5698619170.

The spelling of 79268641 in words is "seventy-nine million, two hundred sixty-eight thousand, six hundred forty-one".