164071745 has 8 divisors (see below), whose sum is σ = 207248640. Its totient is φ = 124349040.

The previous prime is 164071723. The next prime is 164071769. The reversal of 164071745 is 547170461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164071745 - 2¹⁰ = 164070721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863441 + ... + 863630.

It is an arithmetic number, because the mean of its divisors is an integer number (25906080).

Almost surely, 2^164071745 is an apocalyptic number.

It is an amenable number.

164071745 is a deficient number, since it is larger than the sum of its proper divisors (43176895).

164071745 is a wasteful number, since it uses less digits than its factorization.

164071745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727095.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 164071745 is about 12809.0493402126. The cubic root of 164071745 is about 547.4501751257.

The spelling of 164071745 in words is "one hundred sixty-four million, seventy-one thousand, seven hundred forty-five".