87722807 has 2 divisors, whose sum is σ = 87722808. Its totient is φ = 87722806.

The previous prime is 87722797. The next prime is 87722809. The reversal of 87722807 is 70822778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87722807 - 2²⁴ = 70945591 is a prime.

Together with 87722809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87722809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43861403 + 43861404.

It is an arithmetic number, because the mean of its divisors is an integer number (43861404).

Almost surely, 2^87722807 is an apocalyptic number.

87722807 is a deficient number, since it is larger than the sum of its proper divisors (1).

87722807 is an equidigital number, since it uses as much as digits as its factorization.

87722807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 87722807 is about 9366.0454301696. The cubic root of 87722807 is about 444.3285028659.

The spelling of 87722807 in words is "eighty-seven million, seven hundred twenty-two thousand, eight hundred seven".