87620222 has 4 divisors (see below), whose sum is σ = 131430336. Its totient is φ = 43810110.

The previous prime is 87620219. The next prime is 87620249. The reversal of 87620222 is 22202678.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21905054 + ... + 21905057.

It is an arithmetic number, because the mean of its divisors is an integer number (32857584).

Almost surely, 2^87620222 is an apocalyptic number.

87620222 is a deficient number, since it is larger than the sum of its proper divisors (43810114).

87620222 is a wasteful number, since it uses less digits than its factorization.

87620222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43810113.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 87620222 is about 9360.5673973323. The cubic root of 87620222 is about 444.1552327645.

The spelling of 87620222 in words is "eighty-seven million, six hundred twenty thousand, two hundred twenty-two".