87006590 has 16 divisors (see below), whose sum is σ = 170849520. Its totient is φ = 31638720.

The previous prime is 87006559. The next prime is 87006593. The reversal of 87006590 is 9560078.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87006590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87006593) 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, 395375 + ... + 395594.

It is an arithmetic number, because the mean of its divisors is an integer number (10678095).

Almost surely, 2^87006590 is an apocalyptic number.

87006590 is a deficient number, since it is larger than the sum of its proper divisors (83842930).

87006590 is a wasteful number, since it uses less digits than its factorization.

87006590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790987.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 87006590 is about 9327.7323074797. The cubic root of 87006590 is about 443.1159498577.

The spelling of 87006590 in words is "eighty-seven million, six thousand, five hundred ninety".