72706463 has 4 divisors (see below), whose sum is σ = 72744360. Its totient is φ = 72668568.

The previous prime is 72706453. The next prime is 72706477. The reversal of 72706463 is 36460727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36460727 = 23 ⋅1585249.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72706463 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72706453) 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, 15908 + ... + 19961.

It is an arithmetic number, because the mean of its divisors is an integer number (18186090).

Almost surely, 2^72706463 is an apocalyptic number.

72706463 is a deficient number, since it is larger than the sum of its proper divisors (37897).

72706463 is a wasteful number, since it uses less digits than its factorization.

72706463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37896.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 72706463 is about 8526.8084885261. The cubic root of 72706463 is about 417.3729887232.

The spelling of 72706463 in words is "seventy-two million, seven hundred six thousand, four hundred sixty-three".