164770547 has 4 divisors (see below), whose sum is σ = 170452320. Its totient is φ = 159088776.

The previous prime is 164770519. The next prime is 164770553. The reversal of 164770547 is 745077461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745077461 = 41 ⋅18172621.

It is a cyclic number.

It is not a de Polignac number, because 164770547 - 2¹⁶ = 164705011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164770247) 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, 2840843 + ... + 2840900.

It is an arithmetic number, because the mean of its divisors is an integer number (42613080).

Almost surely, 2^164770547 is an apocalyptic number.

164770547 is a deficient number, since it is larger than the sum of its proper divisors (5681773).

164770547 is an equidigital number, since it uses as much as digits as its factorization.

164770547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681772.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 164770547 is about 12836.2980255212. The cubic root of 164770547 is about 548.2262938012.

The spelling of 164770547 in words is "one hundred sixty-four million, seven hundred seventy thousand, five hundred forty-seven".