164225644 has 48 divisors (see below), whose sum is σ = 334073376. Its totient is φ = 69811200.

The previous prime is 164225639. The next prime is 164225657. The reversal of 164225644 is 446522461.

164225644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134782 + ... + 135994.

It is an arithmetic number, because the mean of its divisors is an integer number (6959862).

Almost surely, 2^164225644 is an apocalyptic number.

It is an amenable number.

164225644 is an abundant number, since it is smaller than the sum of its proper divisors (169847732).

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

164225644 is a wasteful number, since it uses less digits than its factorization.

164225644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1424 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 164225644 is about 12815.0553646873. The cubic root of 164225644 is about 547.6212907261.

The spelling of 164225644 in words is "one hundred sixty-four million, two hundred twenty-five thousand, six hundred forty-four".