85989587 has 16 divisors (see below), whose sum is σ = 94221792. Its totient is φ = 78151680.

The previous prime is 85989583. The next prime is 85989599. The reversal of 85989587 is 78598958.

It is a cyclic number.

It is not a de Polignac number, because 85989587 - 2² = 85989583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85989581) 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, 74003 + ... + 75155.

It is an arithmetic number, because the mean of its divisors is an integer number (5888862).

Almost surely, 2^85989587 is an apocalyptic number.

85989587 is a deficient number, since it is larger than the sum of its proper divisors (8232205).

85989587 is a wasteful number, since it uses less digits than its factorization.

85989587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its digits is 7257600, while the sum is 59.

The square root of 85989587 is about 9273.0570471663. The cubic root of 85989587 is about 441.3826803958.

The spelling of 85989587 in words is "eighty-five million, nine hundred eighty-nine thousand, five hundred eighty-seven".