72797801 has 6 divisors (see below), whose sum is σ = 75395502. Its totient is φ = 70286720.

The previous prime is 72797761. The next prime is 72797807. The reversal of 72797801 is 10879727.

It can be written as a sum of positive squares in 3 ways, for example, as 6130576 + 66667225 = 2476^2 + 8165^2 .

It is a de Polignac number, because none of the positive numbers 2^k-72797801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72797807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42440 + ... + 44121.

It is an arithmetic number, because the mean of its divisors is an integer number (12565917).

Almost surely, 2^72797801 is an apocalyptic number.

It is an amenable number.

72797801 is a deficient number, since it is larger than the sum of its proper divisors (2597701).

72797801 is an equidigital number, since it uses as much as digits as its factorization.

72797801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86619 (or 86590 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 72797801 is about 8532.1627387199. The cubic root of 72797801 is about 417.5476914934.

The spelling of 72797801 in words is "seventy-two million, seven hundred ninety-seven thousand, eight hundred one".