72785501 has 8 divisors (see below), whose sum is σ = 76044480. Its totient is φ = 69534432.

The previous prime is 72785491. The next prime is 72785509. The reversal of 72785501 is 10558727.

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

It is a cyclic number.

It is not a de Polignac number, because 72785501 - 2¹⁰ = 72784477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72785509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24566 + ... + 27368.

It is an arithmetic number, because the mean of its divisors is an integer number (9505560).

Almost surely, 2^72785501 is an apocalyptic number.

It is an amenable number.

72785501 is a deficient number, since it is larger than the sum of its proper divisors (3258979).

72785501 is a wasteful number, since it uses less digits than its factorization.

72785501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 72785501 is about 8531.4419062665. The cubic root of 72785501 is about 417.5241737231.

The spelling of 72785501 in words is "seventy-two million, seven hundred eighty-five thousand, five hundred one".