2145696 has 96 divisors (see below), whose sum is σ = 6709248. Its totient is φ = 587520.

The previous prime is 2145683. The next prime is 2145707. The reversal of 2145696 is 6965412.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2145696² = 9208022648832, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20781 + ... + 20883.

It is an arithmetic number, because the mean of its divisors is an integer number (69888).

2^2145696 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 2145696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3354624).

2145696 is an abundant number, since it is smaller than the sum of its proper divisors (4563552).

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

2145696 is a wasteful number, since it uses less digits than its factorization.

2145696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 146 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 2145696 is about 1464.8194427983. The cubic root of 2145696 is about 128.9801063007.

The spelling of 2145696 in words is "two million, one hundred forty-five thousand, six hundred ninety-six".