87766423 has 2 divisors, whose sum is σ = 87766424. Its totient is φ = 87766422.

The previous prime is 87766411. The next prime is 87766433. The reversal of 87766423 is 32466778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87766423 - 2⁵ = 87766391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87766423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87766433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43883211 + 43883212.

It is an arithmetic number, because the mean of its divisors is an integer number (43883212).

Almost surely, 2^87766423 is an apocalyptic number.

87766423 is a deficient number, since it is larger than the sum of its proper divisors (1).

87766423 is an equidigital number, since it uses as much as digits as its factorization.

87766423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 87766423 is about 9368.3735514763. The cubic root of 87766423 is about 444.4021310805.

The spelling of 87766423 in words is "eighty-seven million, seven hundred sixty-six thousand, four hundred twenty-three".