164804247 has 16 divisors (see below), whose sum is σ = 245658880. Its totient is φ = 109192536.

The previous prime is 164804221. The next prime is 164804279. The reversal of 164804247 is 742408461.

164804247 is a `hidden beast` number, since 1 + 648 + 0 + 4 + 2 + 4 + 7 = 666.

It is not a de Polignac number, because 164804247 - 2¹⁶ = 164738711 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 (164804207) 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, 14323 + ... + 23124.

It is an arithmetic number, because the mean of its divisors is an integer number (15353680).

Almost surely, 2^164804247 is an apocalyptic number.

164804247 is a deficient number, since it is larger than the sum of its proper divisors (80854633).

164804247 is a wasteful number, since it uses less digits than its factorization.

164804247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37619 (or 37613 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 164804247 is about 12837.6106421717. The cubic root of 164804247 is about 548.2636669180.

The spelling of 164804247 in words is "one hundred sixty-four million, eight hundred four thousand, two hundred forty-seven".