164100247 has 4 divisors (see below), whose sum is σ = 165944160. Its totient is φ = 162256336.

The previous prime is 164100227. The next prime is 164100253. The reversal of 164100247 is 742001461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164100247 - 2⁷ = 164100119 is a prime.

It is a super-2 number, since 2×164100247² = 53857782130922018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164100227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921823 + ... + 922000.

It is an arithmetic number, because the mean of its divisors is an integer number (41486040).

Almost surely, 2^164100247 is an apocalyptic number.

164100247 is a deficient number, since it is larger than the sum of its proper divisors (1843913).

164100247 is an equidigital number, since it uses as much as digits as its factorization.

164100247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843912.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 164100247 is about 12810.1618647073. The cubic root of 164100247 is about 547.4818737005.

The spelling of 164100247 in words is "one hundred sixty-four million, one hundred thousand, two hundred forty-seven".