72782565 has 8 divisors (see below), whose sum is σ = 116452128. Its totient is φ = 38817360.

The previous prime is 72782527. The next prime is 72782579. The reversal of 72782565 is 56528727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72782565 - 2⁸ = 72782309 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2426071 + ... + 2426100.

It is an arithmetic number, because the mean of its divisors is an integer number (14556516).

Almost surely, 2^72782565 is an apocalyptic number.

It is an amenable number.

72782565 is a deficient number, since it is larger than the sum of its proper divisors (43669563).

72782565 is a wasteful number, since it uses less digits than its factorization.

72782565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852179.

The product of its digits is 235200, while the sum is 42.

The square root of 72782565 is about 8531.2698351418. The cubic root of 72782565 is about 417.5185596588.

The spelling of 72782565 in words is "seventy-two million, seven hundred eighty-two thousand, five hundred sixty-five".