87800638 has 8 divisors (see below), whose sum is σ = 132248160. Its totient is φ = 43717920.

The previous prime is 87800633. The next prime is 87800641. The reversal of 87800638 is 83600878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 87800638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87800633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90598 + ... + 91561.

It is an arithmetic number, because the mean of its divisors is an integer number (16531020).

Almost surely, 2^87800638 is an apocalyptic number.

87800638 is a deficient number, since it is larger than the sum of its proper divisors (44447522).

87800638 is a wasteful number, since it uses less digits than its factorization.

87800638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182402.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 87800638 is about 9370.1994642590. The cubic root of 87800638 is about 444.4598723857.

The spelling of 87800638 in words is "eighty-seven million, eight hundred thousand, six hundred thirty-eight".