164705773 has 4 divisors (see below), whose sum is σ = 164731708. Its totient is φ = 164679840.

The previous prime is 164705753. The next prime is 164705777. The reversal of 164705773 is 377507461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24472809 + 140232964 = 4947^2 + 11842^2 .

It is a cyclic number.

It is not a de Polignac number, because 164705773 - 2¹⁷ = 164574701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164705777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3703 + ... + 18523.

It is an arithmetic number, because the mean of its divisors is an integer number (41182927).

Almost surely, 2^164705773 is an apocalyptic number.

It is an amenable number.

164705773 is a deficient number, since it is larger than the sum of its proper divisors (25935).

164705773 is a wasteful number, since it uses less digits than its factorization.

164705773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25934.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 164705773 is about 12833.7746980380. The cubic root of 164705773 is about 548.1544454745.

The spelling of 164705773 in words is "one hundred sixty-four million, seven hundred five thousand, seven hundred seventy-three".