72786463 has 4 divisors (see below), whose sum is σ = 73207368. Its totient is φ = 72365560.

The previous prime is 72786457. The next prime is 72786499. The reversal of 72786463 is 36468727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36468727 = 1741 ⋅20947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72786463 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 (72786403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210193 + ... + 210538.

It is an arithmetic number, because the mean of its divisors is an integer number (18301842).

Almost surely, 2^72786463 is an apocalyptic number.

72786463 is a deficient number, since it is larger than the sum of its proper divisors (420905).

72786463 is a wasteful number, since it uses less digits than its factorization.

72786463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420904.

The product of its digits is 338688, while the sum is 43.

The square root of 72786463 is about 8531.4982857643. The cubic root of 72786463 is about 417.5260131759.

The spelling of 72786463 in words is "seventy-two million, seven hundred eighty-six thousand, four hundred sixty-three".