85169970 has 48 divisors (see below), whose sum is σ = 233101440. Its totient is φ = 21516192.

The previous prime is 85169963. The next prime is 85169999. The reversal of 85169970 is 7996158.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23194 + ... + 26613.

It is an arithmetic number, because the mean of its divisors is an integer number (4856280).

Almost surely, 2^85169970 is an apocalyptic number.

85169970 is an abundant number, since it is smaller than the sum of its proper divisors (147931470).

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

85169970 is a wasteful number, since it uses less digits than its factorization.

85169970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49839 (or 49836 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 85169970 is about 9228.7577712279. The cubic root of 85169970 is about 439.9758423376.

The spelling of 85169970 in words is "eighty-five million, one hundred sixty-nine thousand, nine hundred seventy".