72616487 has 2 divisors, whose sum is σ = 72616488. Its totient is φ = 72616486.

The previous prime is 72616463. The next prime is 72616501. The reversal of 72616487 is 78461627.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72616487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72616447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36308243 + 36308244.

It is an arithmetic number, because the mean of its divisors is an integer number (36308244).

Almost surely, 2^72616487 is an apocalyptic number.

72616487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72616487 is an equidigital number, since it uses as much as digits as its factorization.

72616487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 72616487 is about 8521.5307897114. The cubic root of 72616487 is about 417.2007479425.

The spelling of 72616487 in words is "seventy-two million, six hundred sixteen thousand, four hundred eighty-seven".