72697801 has 4 divisors (see below), whose sum is σ = 79306704. Its totient is φ = 66088900.

The previous prime is 72697789. The next prime is 72697811. The reversal of 72697801 is 10879627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72697801 - 2¹³ = 72689609 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72697811) 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, 3304435 + ... + 3304456.

It is an arithmetic number, because the mean of its divisors is an integer number (19826676).

Almost surely, 2^72697801 is an apocalyptic number.

It is an amenable number.

72697801 is a deficient number, since it is larger than the sum of its proper divisors (6608903).

72697801 is a wasteful number, since it uses less digits than its factorization.

72697801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608902.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72697801 is about 8526.3005459578. The cubic root of 72697801 is about 417.3564132668.

The spelling of 72697801 in words is "seventy-two million, six hundred ninety-seven thousand, eight hundred one".