72765519 has 8 divisors (see below), whose sum is σ = 98189952. Its totient is φ = 47925720.

The previous prime is 72765509. The next prime is 72765533. The reversal of 72765519 is 91556727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72765519 - 2⁵ = 72765487 is a prime.

It is a super-2 number, since 2×72765519² = 10589641510678722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72765509) 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, 145867 + ... + 146364.

It is an arithmetic number, because the mean of its divisors is an integer number (12273744).

Almost surely, 2^72765519 is an apocalyptic number.

72765519 is a deficient number, since it is larger than the sum of its proper divisors (25424433).

72765519 is a wasteful number, since it uses less digits than its factorization.

72765519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292317.

The product of its digits is 132300, while the sum is 42.

The square root of 72765519 is about 8530.2707459963. The cubic root of 72765519 is about 417.4859622134.

The spelling of 72765519 in words is "seventy-two million, seven hundred sixty-five thousand, five hundred nineteen".