87722423 has 2 divisors, whose sum is σ = 87722424. Its totient is φ = 87722422.

The previous prime is 87722413. The next prime is 87722441. The reversal of 87722423 is 32422778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87722423 - 2¹² = 87718327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87722413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43861211 + 43861212.

It is an arithmetic number, because the mean of its divisors is an integer number (43861212).

Almost surely, 2^87722423 is an apocalyptic number.

87722423 is a deficient number, since it is larger than the sum of its proper divisors (1).

87722423 is an equidigital number, since it uses as much as digits as its factorization.

87722423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 35.

The square root of 87722423 is about 9366.0249305669. The cubic root of 87722423 is about 444.3278545268.

The spelling of 87722423 in words is "eighty-seven million, seven hundred twenty-two thousand, four hundred twenty-three".