1667264 has 28 divisors (see below), whose sum is σ = 3352800. Its totient is φ = 822528.

The previous prime is 1667251. The next prime is 1667279. The reversal of 1667264 is 4627661.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1667264.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6857 + ... + 7095.

2^1667264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676400).

1667264 is an abundant number, since it is smaller than the sum of its proper divisors (1685536).

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

1667264 is a wasteful number, since it uses less digits than its factorization.

1667264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 350 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 1667264 is about 1291.2257742161. The cubic root of 1667264 is about 118.5772727974.

The spelling of 1667264 in words is "one million, six hundred sixty-seven thousand, two hundred sixty-four".