72419717 has 4 divisors (see below), whose sum is σ = 72853536. Its totient is φ = 71985900.

The previous prime is 72419701. The next prime is 72419731. The reversal of 72419717 is 71791427.

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 72419717 - 2⁴ = 72419701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72419747) 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, 216659 + ... + 216992.

It is an arithmetic number, because the mean of its divisors is an integer number (18213384).

Almost surely, 2^72419717 is an apocalyptic number.

It is an amenable number.

72419717 is a deficient number, since it is larger than the sum of its proper divisors (433819).

72419717 is a wasteful number, since it uses less digits than its factorization.

72419717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433818.

The product of its digits is 24696, while the sum is 38.

The square root of 72419717 is about 8509.9774970325. The cubic root of 72419717 is about 416.8235753216.

The spelling of 72419717 in words is "seventy-two million, four hundred nineteen thousand, seven hundred seventeen".