87766222 has 4 divisors (see below), whose sum is σ = 131649336. Its totient is φ = 43883110.

The previous prime is 87766169. The next prime is 87766241. The reversal of 87766222 is 22266778.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21941554 + ... + 21941557.

It is an arithmetic number, because the mean of its divisors is an integer number (32912334).

Almost surely, 2^87766222 is an apocalyptic number.

87766222 is a deficient number, since it is larger than the sum of its proper divisors (43883114).

87766222 is a wasteful number, since it uses less digits than its factorization.

87766222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43883113.

The product of its digits is 112896, while the sum is 40.

The square root of 87766222 is about 9368.3628238876. The cubic root of 87766222 is about 444.4017918281.

The spelling of 87766222 in words is "eighty-seven million, seven hundred sixty-six thousand, two hundred twenty-two".