85166970 has 128 divisors (see below), whose sum is σ = 244532736. Its totient is φ = 18579456.

The previous prime is 85166969. The next prime is 85166981. The reversal of 85166970 is 7966158.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 753634 + ... + 753746.

It is an arithmetic number, because the mean of its divisors is an integer number (1910412).

Almost surely, 2^85166970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85166970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122266368).

85166970 is an abundant number, since it is smaller than the sum of its proper divisors (159365766).

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

85166970 is a wasteful number, since it uses less digits than its factorization.

85166970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 85166970 is about 9228.5952343788. The cubic root of 85166970 is about 439.9706764204.

The spelling of 85166970 in words is "eighty-five million, one hundred sixty-six thousand, nine hundred seventy".