870561166 has 16 divisors (see below), whose sum is σ = 1356238080. Its totient is φ = 418795960.

The previous prime is 870561163. The next prime is 870561173. The reversal of 870561166 is 661165078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870561163) 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, 72940 + ... + 84031.

It is an arithmetic number, because the mean of its divisors is an integer number (84764880).

Almost surely, 2^870561166 is an apocalyptic number.

870561166 is a deficient number, since it is larger than the sum of its proper divisors (485676914).

870561166 is a wasteful number, since it uses less digits than its factorization.

870561166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157079.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 870561166 is about 29505.2735286423. The cubic root of 870561166 is about 954.8454803315.

The spelling of 870561166 in words is "eight hundred seventy million, five hundred sixty-one thousand, one hundred sixty-six".