72787361 has 8 divisors (see below), whose sum is σ = 76252800. Its totient is φ = 69385680.

The previous prime is 72787357. The next prime is 72787369. The reversal of 72787361 is 16378727.

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 72787361 - 2² = 72787357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72787369) 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, 13595 + ... + 18176.

It is an arithmetic number, because the mean of its divisors is an integer number (9531600).

Almost surely, 2^72787361 is an apocalyptic number.

It is an amenable number.

72787361 is a deficient number, since it is larger than the sum of its proper divisors (3465439).

72787361 is a wasteful number, since it uses less digits than its factorization.

72787361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31879.

The product of its digits is 98784, while the sum is 41.

The square root of 72787361 is about 8531.5509141070. The cubic root of 72787361 is about 417.5277302389.

It can be divided in two parts, 727 and 87361, that added together give a palindrome (88088).

The spelling of 72787361 in words is "seventy-two million, seven hundred eighty-seven thousand, three hundred sixty-one".