87611822 has 4 divisors (see below), whose sum is σ = 131417736. Its totient is φ = 43805910.

The previous prime is 87611791. The next prime is 87611827. The reversal of 87611822 is 22811678.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87611827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21902954 + ... + 21902957.

It is an arithmetic number, because the mean of its divisors is an integer number (32854434).

Almost surely, 2^87611822 is an apocalyptic number.

87611822 is a deficient number, since it is larger than the sum of its proper divisors (43805914).

87611822 is a wasteful number, since it uses less digits than its factorization.

87611822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43805913.

The product of its digits is 10752, while the sum is 35.

The square root of 87611822 is about 9360.1186958286. The cubic root of 87611822 is about 444.1410388448.

The spelling of 87611822 in words is "eighty-seven million, six hundred eleven thousand, eight hundred twenty-two".