85867830 has 64 divisors (see below), whose sum is σ = 236390400. Its totient is φ = 22157280.

The previous prime is 85867819. The next prime is 85867841. The reversal of 85867830 is 3876858.

It is an interprime number because it is at equal distance from previous prime (85867819) and next prime (85867841).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3241 + ... + 13499.

It is an arithmetic number, because the mean of its divisors is an integer number (3693600).

Almost surely, 2^85867830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85867830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118195200).

85867830 is an abundant number, since it is smaller than the sum of its proper divisors (150522570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85867830 is a wasteful number, since it uses less digits than its factorization.

85867830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306 (or 10300 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 85867830 is about 9266.4896266062. The cubic root of 85867830 is about 441.1742566477.

The spelling of 85867830 in words is "eighty-five million, eight hundred sixty-seven thousand, eight hundred thirty".