164568340 has 12 divisors (see below), whose sum is σ = 345593556. Its totient is φ = 65827328.

The previous prime is 164568337. The next prime is 164568343. The reversal of 164568340 is 43865461.

It is a happy number.

164568340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164568337) and next prime (164568343).

It can be written as a sum of positive squares in 2 ways, for example, as 123965956 + 40602384 = 11134^2 + 6372^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164568340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164568343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4114189 + ... + 4114228.

It is an arithmetic number, because the mean of its divisors is an integer number (28799463).

Almost surely, 2^164568340 is an apocalyptic number.

164568340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164568340 is an abundant number, since it is smaller than the sum of its proper divisors (181025216).

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

164568340 is a wasteful number, since it uses less digits than its factorization.

164568340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8228426 (or 8228424 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 164568340 is about 12828.4192323139. The cubic root of 164568340 is about 548.0019402492.

The spelling of 164568340 in words is "one hundred sixty-four million, five hundred sixty-eight thousand, three hundred forty".