164002061 has 4 divisors (see below), whose sum is σ = 164489052. Its totient is φ = 163515072.

The previous prime is 164002057. The next prime is 164002073. The reversal of 164002061 is 160200461.

It is a happy number.

164002061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160200461 = 109 ⋅1469729.

It can be written as a sum of positive squares in 2 ways, for example, as 93122500 + 70879561 = 9650^2 + 8419^2 .

It is a cyclic number.

It is not a de Polignac number, because 164002061 - 2² = 164002057 is a prime.

It is a super-3 number, since 3×164002061³ (a number of 26 digits) contains 333 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 (164002001) 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, 242990 + ... + 243663.

It is an arithmetic number, because the mean of its divisors is an integer number (41122263).

Almost surely, 2^164002061 is an apocalyptic number.

It is an amenable number.

164002061 is a deficient number, since it is larger than the sum of its proper divisors (486991).

164002061 is an equidigital number, since it uses as much as digits as its factorization.

164002061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486990.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 164002061 is about 12806.3289431437. The cubic root of 164002061 is about 547.3726604181.

The spelling of 164002061 in words is "one hundred sixty-four million, two thousand, sixty-one".