2161064 has 8 divisors (see below), whose sum is σ = 4052010. Its totient is φ = 1080528.

The previous prime is 2161031. The next prime is 2161087. The reversal of 2161064 is 4601612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 58564 = 1450^2 + 242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2161064² = 9340395224192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135059 + ... + 135074.

2^2161064 is an apocalyptic number.

It is an amenable number.

2161064 is a deficient number, since it is larger than the sum of its proper divisors (1890946).

2161064 is a wasteful number, since it uses less digits than its factorization.

2161064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270139 (or 270135 counting only the distinct ones).

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

The square root of 2161064 is about 1470.0557812546. The cubic root of 2161064 is about 129.2873030891.

Adding to 2161064 its reverse (4601612), we get a palindrome (6762676).

The spelling of 2161064 in words is "two million, one hundred sixty-one thousand, sixty-four".