72605791 has 2 divisors, whose sum is σ = 72605792. Its totient is φ = 72605790.

The previous prime is 72605737. The next prime is 72605809. The reversal of 72605791 is 19750627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72605791 - 2⁹ = 72605279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72605791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72605191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36302895 + 36302896.

It is an arithmetic number, because the mean of its divisors is an integer number (36302896).

Almost surely, 2^72605791 is an apocalyptic number.

72605791 is a deficient number, since it is larger than the sum of its proper divisors (1).

72605791 is an equidigital number, since it uses as much as digits as its factorization.

72605791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 72605791 is about 8520.9031798278. The cubic root of 72605791 is about 417.1802631624.

The spelling of 72605791 in words is "seventy-two million, six hundred five thousand, seven hundred ninety-one".