72718063 has 4 divisors (see below), whose sum is σ = 79328808. Its totient is φ = 66107320.

The previous prime is 72718057. The next prime is 72718069. The reversal of 72718063 is 36081727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36081727 = 11 ⋅3280157.

It is an interprime number because it is at equal distance from previous prime (72718057) and next prime (72718069).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72718063 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 (72718069) 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, 3305356 + ... + 3305377.

It is an arithmetic number, because the mean of its divisors is an integer number (19832202).

Almost surely, 2^72718063 is an apocalyptic number.

72718063 is a deficient number, since it is larger than the sum of its proper divisors (6610745).

72718063 is a wasteful number, since it uses less digits than its factorization.

72718063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610744.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72718063 is about 8527.4886690045. The cubic root of 72718063 is about 417.3951842246.

The spelling of 72718063 in words is "seventy-two million, seven hundred eighteen thousand, sixty-three".