87638822 has 16 divisors (see below), whose sum is σ = 134348544. Its totient is φ = 42864000.

The previous prime is 87638797. The next prime is 87638827. The reversal of 87638822 is 22883678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87638827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21422 + ... + 25182.

It is an arithmetic number, because the mean of its divisors is an integer number (8396784).

Almost surely, 2^87638822 is an apocalyptic number.

87638822 is a deficient number, since it is larger than the sum of its proper divisors (46709722).

87638822 is a wasteful number, since it uses less digits than its factorization.

87638822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015.

The product of its digits is 258048, while the sum is 44.

The square root of 87638822 is about 9361.5608741278. The cubic root of 87638822 is about 444.1866589301.

The spelling of 87638822 in words is "eighty-seven million, six hundred thirty-eight thousand, eight hundred twenty-two".