85616290 has 16 divisors (see below), whose sum is σ = 154249920. Its totient is φ = 34215280.

The previous prime is 85616287. The next prime is 85616291. The reversal of 85616290 is 9261658.

It is a super-2 number, since 2×85616290² = 14660298226728200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85616291) 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, 9945 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (9640620).

Almost surely, 2^85616290 is an apocalyptic number.

85616290 is a deficient number, since it is larger than the sum of its proper divisors (68633630).

85616290 is a wasteful number, since it uses less digits than its factorization.

85616290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7817.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 85616290 is about 9252.9071107409. The cubic root of 85616290 is about 440.7430454475.

The spelling of 85616290 in words is "eighty-five million, six hundred sixteen thousand, two hundred ninety".