72547763 has 4 divisors (see below), whose sum is σ = 75049440. Its totient is φ = 70046088.

The previous prime is 72547753. The next prime is 72547771. The reversal of 72547763 is 36774527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36774527 = 53 ⋅693859.

It is a cyclic number.

It is not a de Polignac number, because 72547763 - 2⁴ = 72547747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72547763.

It is not an unprimeable number, because it can be changed into a prime (72547703) 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, 1250795 + ... + 1250852.

It is an arithmetic number, because the mean of its divisors is an integer number (18762360).

Almost surely, 2^72547763 is an apocalyptic number.

72547763 is a deficient number, since it is larger than the sum of its proper divisors (2501677).

72547763 is a wasteful number, since it uses less digits than its factorization.

72547763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501676.

The product of its digits is 246960, while the sum is 41.

The square root of 72547763 is about 8517.4974611091. The cubic root of 72547763 is about 417.0690939381.

The spelling of 72547763 in words is "seventy-two million, five hundred forty-seven thousand, seven hundred sixty-three".