87822767 has 2 divisors, whose sum is σ = 87822768. Its totient is φ = 87822766.

The previous prime is 87822751. The next prime is 87822773. The reversal of 87822767 is 76722878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87822767 - 2⁴ = 87822751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87822667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43911383 + 43911384.

It is an arithmetic number, because the mean of its divisors is an integer number (43911384).

Almost surely, 2^87822767 is an apocalyptic number.

87822767 is a deficient number, since it is larger than the sum of its proper divisors (1).

87822767 is an equidigital number, since it uses as much as digits as its factorization.

87822767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 47.

The square root of 87822767 is about 9371.3802078456. The cubic root of 87822767 is about 444.4972093442.

The spelling of 87822767 in words is "eighty-seven million, eight hundred twenty-two thousand, seven hundred sixty-seven".