72759663 has 6 divisors (see below), whose sum is σ = 105097304. Its totient is φ = 48506436.

The previous prime is 72759653. The next prime is 72759671. The reversal of 72759663 is 36695727.

It is not a de Polignac number, because 72759663 - 2¹⁸ = 72497519 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 (72759613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4042195 + ... + 4042212.

Almost surely, 2^72759663 is an apocalyptic number.

72759663 is a deficient number, since it is larger than the sum of its proper divisors (32337641).

72759663 is a wasteful number, since it uses less digits than its factorization.

72759663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084413 (or 8084410 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 72759663 is about 8529.9274908993. The cubic root of 72759663 is about 417.4747624794.

The spelling of 72759663 in words is "seventy-two million, seven hundred fifty-nine thousand, six hundred sixty-three".