72618943 has 2 divisors, whose sum is σ = 72618944. Its totient is φ = 72618942.

The previous prime is 72618919. The next prime is 72618947. The reversal of 72618943 is 34981627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72618943 - 2¹⁷ = 72487871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72618896 and 72618905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72618947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36309471 + 36309472.

It is an arithmetic number, because the mean of its divisors is an integer number (36309472).

Almost surely, 2^72618943 is an apocalyptic number.

72618943 is a deficient number, since it is larger than the sum of its proper divisors (1).

72618943 is an equidigital number, since it uses as much as digits as its factorization.

72618943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 72618943 is about 8521.6748940569. The cubic root of 72618943 is about 417.2054513441.

The spelling of 72618943 in words is "seventy-two million, six hundred eighteen thousand, nine hundred forty-three".