72797763 has 4 divisors (see below), whose sum is σ = 97063688. Its totient is φ = 48531840.

The previous prime is 72797761. The next prime is 72797807. The reversal of 72797763 is 36779727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72797763 - 2¹ = 72797761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72797761) 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 in 3 ways as a sum of consecutive naturals, for example, 12132958 + ... + 12132963.

It is an arithmetic number, because the mean of its divisors is an integer number (24265922).

Almost surely, 2^72797763 is an apocalyptic number.

72797763 is a deficient number, since it is larger than the sum of its proper divisors (24265925).

72797763 is a wasteful number, since it uses less digits than its factorization.

72797763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24265924.

The product of its digits is 777924, while the sum is 48.

The square root of 72797763 is about 8532.1605118516. The cubic root of 72797763 is about 417.5476188409.

The spelling of 72797763 in words is "seventy-two million, seven hundred ninety-seven thousand, seven hundred sixty-three".