72382691 has 2 divisors, whose sum is σ = 72382692. Its totient is φ = 72382690.

The previous prime is 72382603. The next prime is 72382703. The reversal of 72382691 is 19628327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72382691 - 2¹⁸ = 72120547 is a prime.

It is a Chen prime.

It is equal to p_4249973 and since 72382691 and 4249973 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72382601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36191345 + 36191346.

It is an arithmetic number, because the mean of its divisors is an integer number (36191346).

Almost surely, 2^72382691 is an apocalyptic number.

72382691 is a deficient number, since it is larger than the sum of its proper divisors (1).

72382691 is an equidigital number, since it uses as much as digits as its factorization.

72382691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 72382691 is about 8507.8017724909. The cubic root of 72382691 is about 416.7525268039.

The spelling of 72382691 in words is "seventy-two million, three hundred eighty-two thousand, six hundred ninety-one".