1653696 has 140 divisors (see below), whose sum is σ = 5532120. Its totient is φ = 483840.

The previous prime is 1653689. The next prime is 1653697. The reversal of 1653696 is 6963561.

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

Its product of digits (29160) is a multiple of the sum of its prime divisors (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1653696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653697) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57010 + ... + 57038.

2^1653696 is an apocalyptic number.

1653696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2766060).

1653696 is an abundant number, since it is smaller than the sum of its proper divisors (3878424).

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

1653696 is a wasteful number, since it uses less digits than its factorization.

1653696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 45 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 1653696 is about 1285.9611191634. The cubic root of 1653696 is about 118.2547402921.

The spelling of 1653696 in words is "one million, six hundred fifty-three thousand, six hundred ninety-six".