164160247 has 4 divisors (see below), whose sum is σ = 172800280. Its totient is φ = 155520216.

The previous prime is 164160193. The next prime is 164160263. The reversal of 164160247 is 742061461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742061461 = 11827 ⋅62743.

It is a cyclic number.

It is not a de Polignac number, because 164160247 - 2¹⁵ = 164127479 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 (164160287) 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, 4319988 + ... + 4320025.

It is an arithmetic number, because the mean of its divisors is an integer number (43200070).

Almost surely, 2^164160247 is an apocalyptic number.

164160247 is a deficient number, since it is larger than the sum of its proper divisors (8640033).

164160247 is an equidigital number, since it uses as much as digits as its factorization.

164160247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640032.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 164160247 is about 12812.5035414629. The cubic root of 164160247 is about 547.5485908654.

The spelling of 164160247 in words is "one hundred sixty-four million, one hundred sixty thousand, two hundred forty-seven".