1689264 has 30 divisors (see below), whose sum is σ = 4727996. Its totient is φ = 563040.

The previous prime is 1689263. The next prime is 1689277. The reversal of 1689264 is 4629861.

It is a super-2 number, since 2×1689264² = 5707225723392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 1 + 6 + 8 + 9⁴ + 2¹¹ + 6⁸ + 4⁵ .

It is not an unprimeable number, because it can be changed into a prime (1689263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5722 + ... + 6009.

2^1689264 is an apocalyptic number.

It is an amenable number.

1689264 is an abundant number, since it is smaller than the sum of its proper divisors (3038732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689264 is a wasteful number, since it uses less digits than its factorization.

1689264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11745 (or 11736 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1689264 is about 1299.7168922500. The cubic root of 1689264 is about 119.0965485319.

It can be divided in two parts, 1689 and 264, that added together give a triangular number (1953 = T₆₂).

The spelling of 1689264 in words is "one million, six hundred eighty-nine thousand, two hundred sixty-four".