85618537 has 16 divisors (see below), whose sum is σ = 90461952. Its totient is φ = 80945280.

The previous prime is 85618523. The next prime is 85618571. The reversal of 85618537 is 73581658.

It is not a de Polignac number, because 85618537 - 2¹⁹ = 85094249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85618493 and 85618502.

It is not an unprimeable number, because it can be changed into a prime (85618597) 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, 302398 + ... + 302680.

It is an arithmetic number, because the mean of its divisors is an integer number (5653872).

Almost surely, 2^85618537 is an apocalyptic number.

It is an amenable number.

85618537 is a deficient number, since it is larger than the sum of its proper divisors (4843415).

85618537 is a wasteful number, since it uses less digits than its factorization.

85618537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 201600, while the sum is 43.

The square root of 85618537 is about 9253.0285312432. The cubic root of 85618537 is about 440.7469011817.

The spelling of 85618537 in words is "eighty-five million, six hundred eighteen thousand, five hundred thirty-seven".