85616427 has 16 divisors (see below), whose sum is σ = 123103008. Its totient is φ = 52615680.

The previous prime is 85616423. The next prime is 85616431. The reversal of 85616427 is 72461658.

It is an interprime number because it is at equal distance from previous prime (85616423) and next prime (85616431).

It is not a de Polignac number, because 85616427 - 2² = 85616423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (85616423) 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, 52273 + ... + 53885.

It is an arithmetic number, because the mean of its divisors is an integer number (7693938).

Almost surely, 2^85616427 is an apocalyptic number.

85616427 is a deficient number, since it is larger than the sum of its proper divisors (37486581).

85616427 is a wasteful number, since it uses less digits than its factorization.

85616427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990.

The product of its digits is 80640, while the sum is 39.

The square root of 85616427 is about 9252.9145138167. The cubic root of 85616427 is about 440.7432805343.

The spelling of 85616427 in words is "eighty-five million, six hundred sixteen thousand, four hundred twenty-seven".