1415664 has 80 divisors (see below), whose sum is σ = 4240800. Its totient is φ = 451584.

The previous prime is 1415651. The next prime is 1415681. The reversal of 1415664 is 4665141.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12472 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2^1415664 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 1415664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120400).

1415664 is an abundant number, since it is smaller than the sum of its proper divisors (2825136).

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

1415664 is a wasteful number, since it uses less digits than its factorization.

1415664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1415664 is about 1189.8167926198. The cubic root of 1415664 is about 112.2845654898.

The spelling of 1415664 in words is "one million, four hundred fifteen thousand, six hundred sixty-four".