87644422 has 8 divisors (see below), whose sum is σ = 131506416. Its totient is φ = 43808952.

The previous prime is 87644419. The next prime is 87644437. The reversal of 87644422 is 22444678.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 9028 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (16438302).

Almost surely, 2^87644422 is an apocalyptic number.

87644422 is a deficient number, since it is larger than the sum of its proper divisors (43861994).

87644422 is a wasteful number, since it uses less digits than its factorization.

87644422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13262.

The product of its digits is 86016, while the sum is 37.

The square root of 87644422 is about 9361.8599647720. The cubic root of 87644422 is about 444.1961197005.

The spelling of 87644422 in words is "eighty-seven million, six hundred forty-four thousand, four hundred twenty-two".