72759999 has 24 divisors (see below), whose sum is σ = 107068080. Its totient is φ = 43690752.

The previous prime is 72759989. The next prime is 72760003. The reversal of 72759999 is 99995727.

It is not a de Polignac number, because 72759999 - 2¹⁶ = 72694463 is a prime.

72759999 is a modest number, since divided by 9999 gives 7275 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72759919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71607 + ... + 72615.

It is an arithmetic number, because the mean of its divisors is an integer number (4461170).

Almost surely, 2^72759999 is an apocalyptic number.

72759999 is a deficient number, since it is larger than the sum of its proper divisors (34308081).

72759999 is a wasteful number, since it uses less digits than its factorization.

72759999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1068 counting only the distinct ones).

The product of its digits is 3214890, while the sum is 57.

The square root of 72759999 is about 8529.9471862374. The cubic root of 72759999 is about 417.4754051033.

It can be divided in two parts, 727 and 59999, that added together give a triangular number (60726 = T₃₄₈).

The spelling of 72759999 in words is "seventy-two million, seven hundred fifty-nine thousand, nine hundred ninety-nine".