164140066 has 16 divisors (see below), whose sum is σ = 267740856. Its totient is φ = 75154176.

The previous prime is 164140063. The next prime is 164140147. The reversal of 164140066 is 660041461.

It can be written as a sum of positive squares in 4 ways, for example, as 153388225 + 10751841 = 12385^2 + 3279^2 .

It is a super-2 number, since 2×164140066² = 53883922532968712, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 63981 + ... + 66496.

Almost surely, 2^164140066 is an apocalyptic number.

164140066 is a deficient number, since it is larger than the sum of its proper divisors (103600790).

164140066 is a wasteful number, since it uses less digits than its factorization.

164140066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130533.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 164140066 is about 12811.7159662553. The cubic root of 164140066 is about 547.5261523617.

The spelling of 164140066 in words is "one hundred sixty-four million, one hundred forty thousand, sixty-six".