72104797 has 4 divisors (see below), whose sum is σ = 73181056. Its totient is φ = 71028540.

The previous prime is 72104779. The next prime is 72104807. The reversal of 72104797 is 79740127.

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 a de Polignac number, because none of the positive numbers 2^k-72104797 is a prime.

It is a super-2 number, since 2×72104797² = 10398203500822418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72104707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538029 + ... + 538162.

It is an arithmetic number, because the mean of its divisors is an integer number (18295264).

Almost surely, 2^72104797 is an apocalyptic number.

It is an amenable number.

72104797 is a deficient number, since it is larger than the sum of its proper divisors (1076259).

72104797 is a wasteful number, since it uses less digits than its factorization.

72104797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076258.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 72104797 is about 8491.4543512875. The cubic root of 72104797 is about 416.2185061558.

The spelling of 72104797 in words is "seventy-two million, one hundred four thousand, seven hundred ninety-seven".