72759391 has 2 divisors, whose sum is σ = 72759392. Its totient is φ = 72759390.

The previous prime is 72759367. The next prime is 72759403. The reversal of 72759391 is 19395727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72759391 - 2¹¹ = 72757343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72759091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36379695 + 36379696.

It is an arithmetic number, because the mean of its divisors is an integer number (36379696).

Almost surely, 2^72759391 is an apocalyptic number.

72759391 is a deficient number, since it is larger than the sum of its proper divisors (1).

72759391 is an equidigital number, since it uses as much as digits as its factorization.

72759391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The square root of 72759391 is about 8529.9115470209. The cubic root of 72759391 is about 417.4742422585.

The spelling of 72759391 in words is "seventy-two million, seven hundred fifty-nine thousand, three hundred ninety-one".