164140065 has 48 divisors (see below), whose sum is σ = 291695040. Its totient is φ = 85357440.

The previous prime is 164140063. The next prime is 164140147. The reversal of 164140065 is 560041461.

It is not a de Polignac number, because 164140065 - 2¹ = 164140063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164140063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 560059 + ... + 560351.

It is an arithmetic number, because the mean of its divisors is an integer number (6076980).

Almost surely, 2^164140065 is an apocalyptic number.

164140065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164140065 is a deficient number, since it is larger than the sum of its proper divisors (127554975).

164140065 is a wasteful number, since it uses less digits than its factorization.

164140065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 164140065 is about 12811.7159272285. The cubic root of 164140065 is about 547.5261512498.

The spelling of 164140065 in words is "one hundred sixty-four million, one hundred forty thousand, sixty-five".