1241664 has 56 divisors (see below), whose sum is σ = 3413760. Its totient is φ = 397824.

The previous prime is 1241659. The next prime is 1241677. The reversal of 1241664 is 4661421.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5457 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (60960).

2^1241664 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 1241664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706880).

1241664 is an abundant number, since it is smaller than the sum of its proper divisors (2172096).

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

1241664 is a wasteful number, since it uses less digits than its factorization.

1241664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 257 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1241664 is about 1114.2997801310. The cubic root of 1241664 is about 107.4817419866.

The spelling of 1241664 in words is "one million, two hundred forty-one thousand, six hundred sixty-four".