164570427 has 16 divisors (see below), whose sum is σ = 278638080. Its totient is φ = 94040136.

The previous prime is 164570423. The next prime is 164570429. The reversal of 164570427 is 724075461.

164570427 is a `hidden beast` number, since 1 + 64 + 570 + 4 + 27 = 666.

It is not a de Polignac number, because 164570427 - 2² = 164570423 is a prime.

It is a super-3 number, since 3×164570427³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164570391 and 164570400.

It is not an unprimeable number, because it can be changed into a prime (164570423) 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, 435183 + ... + 435560.

It is an arithmetic number, because the mean of its divisors is an integer number (17414880).

Almost surely, 2^164570427 is an apocalyptic number.

164570427 is a deficient number, since it is larger than the sum of its proper divisors (114067653).

164570427 is an equidigital number, since it uses as much as digits as its factorization.

164570427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870759 (or 870753 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 164570427 is about 12828.5005748918. The cubic root of 164570427 is about 548.0042567645.

The spelling of 164570427 in words is "one hundred sixty-four million, five hundred seventy thousand, four hundred twenty-seven".