72635039 has 2 divisors, whose sum is σ = 72635040. Its totient is φ = 72635038.

The previous prime is 72635029. The next prime is 72635047. The reversal of 72635039 is 93053627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72635039 - 2⁴ = 72635023 is a prime.

It is equal to p_4263875 and since 72635039 and 4263875 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72635009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36317519 + 36317520.

It is an arithmetic number, because the mean of its divisors is an integer number (36317520).

Almost surely, 2^72635039 is an apocalyptic number.

72635039 is a deficient number, since it is larger than the sum of its proper divisors (1).

72635039 is an equidigital number, since it uses as much as digits as its factorization.

72635039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 72635039 is about 8522.6192570125. The cubic root of 72635039 is about 417.2362736180.

The spelling of 72635039 in words is "seventy-two million, six hundred thirty-five thousand, thirty-nine".