164769645 has 16 divisors (see below), whose sum is σ = 263833920. Its totient is φ = 87809664.

The previous prime is 164769643. The next prime is 164769659. The reversal of 164769645 is 546967461.

It is not a de Polignac number, because 164769645 - 2¹ = 164769643 is a prime.

It is a super-3 number, since 3×164769645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164769594 and 164769603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164769643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20722 + ... + 27548.

It is an arithmetic number, because the mean of its divisors is an integer number (16489620).

Almost surely, 2^164769645 is an apocalyptic number.

164769645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164769645 is a deficient number, since it is larger than the sum of its proper divisors (99064275).

164769645 is a wasteful number, since it uses less digits than its factorization.

164769645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444.

The product of its digits is 1088640, while the sum is 48.

The square root of 164769645 is about 12836.2628907326. The cubic root of 164769645 is about 548.2252934181.

The spelling of 164769645 in words is "one hundred sixty-four million, seven hundred sixty-nine thousand, six hundred forty-five".