1653366 has 64 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 441600.

The previous prime is 1653347. The next prime is 1653383. The reversal of 1653366 is 6633561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35155 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^1653366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032128).

1653366 is an abundant number, since it is smaller than the sum of its proper divisors (2410890).

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

1653366 is a wasteful number, since it uses less digits than its factorization.

1653366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117.

The product of its digits is 9720, while the sum is 30.

The square root of 1653366 is about 1285.8328040612. The cubic root of 1653366 is about 118.2468737394.

It can be divided in two parts, 165336 and 6, that multiplied together give a square (992016 = 996²).

The spelling of 1653366 in words is "one million, six hundred fifty-three thousand, three hundred sixty-six".