2159764 has 12 divisors (see below), whose sum is σ = 3882004. Its totient is φ = 1050624.

The previous prime is 2159719. The next prime is 2159767. The reversal of 2159764 is 4679512.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 1119364 = 1020^2 + 1058^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159767) 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, 7149 + ... + 7444.

2^2159764 is an apocalyptic number.

It is an amenable number.

2159764 is a deficient number, since it is larger than the sum of its proper divisors (1722240).

2159764 is a wasteful number, since it uses less digits than its factorization.

2159764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14634 (or 14632 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 2159764 is about 1469.6135546463. The cubic root of 2159764 is about 129.2613733917.

The spelling of 2159764 in words is "two million, one hundred fifty-nine thousand, seven hundred sixty-four".