87544990 has 32 divisors (see below), whose sum is σ = 173660256. Its totient is φ = 31570560.

The previous prime is 87544987. The next prime is 87544999. The reversal of 87544990 is 9944578.

It is a self number, because there is not a number n which added to its sum of digits gives 87544990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87544999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2241 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (5426883).

Almost surely, 2^87544990 is an apocalyptic number.

87544990 is a deficient number, since it is larger than the sum of its proper divisors (86115266).

87544990 is a wasteful number, since it uses less digits than its factorization.

87544990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15724.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 87544990 is about 9356.5479745470. The cubic root of 87544990 is about 444.0280769789.

The spelling of 87544990 in words is "eighty-seven million, five hundred forty-four thousand, nine hundred ninety".