164774285 has 32 divisors (see below), whose sum is σ = 231027552. Its totient is φ = 111697920.

The previous prime is 164774279. The next prime is 164774287. The reversal of 164774285 is 582477461.

It can be written as a sum of positive squares in 16 ways, for example, as 131377444 + 33396841 = 11462^2 + 5779^2 .

It is not a de Polignac number, because 164774285 - 2¹⁸ = 164512141 is a prime.

It is a super-2 number, since 2×164774285² = 54301129994522450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164774287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43487 + ... + 47123.

It is an arithmetic number, because the mean of its divisors is an integer number (7219611).

Almost surely, 2^164774285 is an apocalyptic number.

It is an amenable number.

164774285 is a deficient number, since it is larger than the sum of its proper divisors (66253267).

164774285 is a wasteful number, since it uses less digits than its factorization.

164774285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its digits is 376320, while the sum is 44.

The square root of 164774285 is about 12836.4436274227. The cubic root of 164774285 is about 548.2304394741.

The spelling of 164774285 in words is "one hundred sixty-four million, seven hundred seventy-four thousand, two hundred eighty-five".