164747 has 8 divisors (see below), whose sum is σ = 190512. Its totient is φ = 140800.

The previous prime is 164743. The next prime is 164767. The reversal of 164747 is 747461.

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 164747 - 2² = 164743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (23814).

2¹⁶⁴⁷⁴⁷ is an apocalyptic number.

164747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

164747 is a deficient number, since it is larger than the sum of its proper divisors (25765).

164747 is a wasteful number, since it uses less digits than its factorization.

164747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its digits is 4704, while the sum is 29.

The square root of 164747 is about 405.8903792898. The cubic root of 164747 is about 54.8200177282.

The spelling of 164747 in words is "one hundred sixty-four thousand, seven hundred forty-seven".