164865744 has 30 divisors (see below), whose sum is σ = 461395506. Its totient is φ = 54955200.

The previous prime is 164865739. The next prime is 164865749. The reversal of 164865744 is 447568461.

164865744 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 (164865739) and next prime (164865749).

It can be written as a sum of positive squares in only one way, i.e., 164865600 + 144 = 12840^2 + 12^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164865744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164865749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572307 + ... + 572594.

Almost surely, 2^164865744 is an apocalyptic number.

It is an amenable number.

164865744 is an abundant number, since it is smaller than the sum of its proper divisors (296529762).

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

164865744 is a wasteful number, since it uses less digits than its factorization.

164865744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144915 (or 1144906 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 164865744 is about 12840.0056074754. The cubic root of 164865744 is about 548.3318536272.

The spelling of 164865744 in words is "one hundred sixty-four million, eight hundred sixty-five thousand, seven hundred forty-four".