90863587 has 8 divisors (see below), whose sum is σ = 92667680. Its totient is φ = 89069760.

The previous prime is 90863581. The next prime is 90863603. The reversal of 90863587 is 78536809.

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

It is not a de Polignac number, because 90863587 - 2⁷ = 90863459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90863581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16714 + ... + 21472.

It is an arithmetic number, because the mean of its divisors is an integer number (11583460).

Almost surely, 2^90863587 is an apocalyptic number.

90863587 is a deficient number, since it is larger than the sum of its proper divisors (1804093).

90863587 is a wasteful number, since it uses less digits than its factorization.

90863587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133.

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

The square root of 90863587 is about 9532.2393486526. The cubic root of 90863587 is about 449.5692783974.

The spelling of 90863587 in words is "ninety million, eight hundred sixty-three thousand, five hundred eighty-seven".