164619864 has 96 divisors (see below), whose sum is σ = 467744400. Its totient is φ = 54307584.

The previous prime is 164619811. The next prime is 164619877. The reversal of 164619864 is 468916461.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1697064 + ... + 1697160.

Almost surely, 2^164619864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164619864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233872200).

164619864 is an abundant number, since it is smaller than the sum of its proper divisors (303124536).

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

164619864 is an frugal number, since it uses more digits than its factorization.

164619864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 102 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 164619864 is about 12830.4272726983. The cubic root of 164619864 is about 548.0591248122.

The spelling of 164619864 in words is "one hundred sixty-four million, six hundred nineteen thousand, eight hundred sixty-four".