72774587 has 2 divisors, whose sum is σ = 72774588. Its totient is φ = 72774586.

The previous prime is 72774571. The next prime is 72774589. The reversal of 72774587 is 78547727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72774587 - 2⁴ = 72774571 is a prime.

It is a super-2 number, since 2×72774587² = 10592281026041138, which contains 22 as substring.

Together with 72774589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72774589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36387293 + 36387294.

It is an arithmetic number, because the mean of its divisors is an integer number (36387294).

Almost surely, 2^72774587 is an apocalyptic number.

72774587 is a deficient number, since it is larger than the sum of its proper divisors (1).

72774587 is an equidigital number, since it uses as much as digits as its factorization.

72774587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768320, while the sum is 47.

The square root of 72774587 is about 8530.8022483234. The cubic root of 72774587 is about 417.5033037854.

The spelling of 72774587 in words is "seventy-two million, seven hundred seventy-four thousand, five hundred eighty-seven".