72887123 has 2 divisors, whose sum is σ = 72887124. Its totient is φ = 72887122.

The previous prime is 72887119. The next prime is 72887183. The reversal of 72887123 is 32178827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72887123 - 2² = 72887119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72887183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36443561 + 36443562.

It is an arithmetic number, because the mean of its divisors is an integer number (36443562).

Almost surely, 2^72887123 is an apocalyptic number.

72887123 is a deficient number, since it is larger than the sum of its proper divisors (1).

72887123 is an equidigital number, since it uses as much as digits as its factorization.

72887123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 72887123 is about 8537.3955630508. The cubic root of 72887123 is about 417.7183969762.

The spelling of 72887123 in words is "seventy-two million, eight hundred eighty-seven thousand, one hundred twenty-three".