72277087 has 2 divisors, whose sum is σ = 72277088. Its totient is φ = 72277086.

The previous prime is 72277067. The next prime is 72277141. The reversal of 72277087 is 78077227.

It is a weak prime.

It is an emirp because it is prime and its reverse (78077227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72277087 - 2⁷ = 72276959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72277067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36138543 + 36138544.

It is an arithmetic number, because the mean of its divisors is an integer number (36138544).

Almost surely, 2^72277087 is an apocalyptic number.

72277087 is a deficient number, since it is larger than the sum of its proper divisors (1).

72277087 is an equidigital number, since it uses as much as digits as its factorization.

72277087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 72277087 is about 8501.5932036295. The cubic root of 72277087 is about 416.5497520152.

The spelling of 72277087 in words is "seventy-two million, two hundred seventy-seven thousand, eighty-seven".