164771616 has 72 divisors (see below), whose sum is σ = 459542160. Its totient is φ = 51684352.

The previous prime is 164771611. The next prime is 164771639. The reversal of 164771616 is 616177461.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (164771611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24775 + ... + 30713.

It is an arithmetic number, because the mean of its divisors is an integer number (6382530).

Almost surely, 2^164771616 is an apocalyptic number.

164771616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164771616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229771080).

164771616 is an abundant number, since it is smaller than the sum of its proper divisors (294770544).

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

164771616 is a wasteful number, since it uses less digits than its factorization.

164771616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986 (or 5961 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 164771616 is about 12836.3396651849. The cubic root of 164771616 is about 548.2274793946.

The spelling of 164771616 in words is "one hundred sixty-four million, seven hundred seventy-one thousand, six hundred sixteen".