72618607 has 2 divisors, whose sum is σ = 72618608. Its totient is φ = 72618606.

The previous prime is 72618599. The next prime is 72618641. The reversal of 72618607 is 70681627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72618607 - 2³ = 72618599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72610607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36309303 + 36309304.

It is an arithmetic number, because the mean of its divisors is an integer number (36309304).

Almost surely, 2^72618607 is an apocalyptic number.

72618607 is a deficient number, since it is larger than the sum of its proper divisors (1).

72618607 is an equidigital number, since it uses as much as digits as its factorization.

72618607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 72618607 is about 8521.6551795998. The cubic root of 72618607 is about 417.2048078882.

The spelling of 72618607 in words is "seventy-two million, six hundred eighteen thousand, six hundred seven".