164340861 has 8 divisors (see below), whose sum is σ = 230653920. Its totient is φ = 103794192.

The previous prime is 164340857. The next prime is 164340877. The reversal of 164340861 is 168043461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164340861 - 2² = 164340857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164340821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441530 + ... + 1441643.

It is an arithmetic number, because the mean of its divisors is an integer number (28831740).

Almost surely, 2^164340861 is an apocalyptic number.

It is an amenable number.

164340861 is a deficient number, since it is larger than the sum of its proper divisors (66313059).

164340861 is a wasteful number, since it uses less digits than its factorization.

164340861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883195.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 164340861 is about 12819.5499530990. The cubic root of 164340861 is about 547.7493270284.

The spelling of 164340861 in words is "one hundred sixty-four million, three hundred forty thousand, eight hundred sixty-one".