2870656 has 32 divisors (see below), whose sum is σ = 5869080. Its totient is φ = 1397760.

The previous prime is 2870641. The next prime is 2870657. The reversal of 2870656 is 6560782.

2870656 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (32).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4975 + ... + 5521.

2^2870656 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 2870656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934540).

2870656 is an abundant number, since it is smaller than the sum of its proper divisors (2998424).

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

2870656 is an equidigital number, since it uses as much as digits as its factorization.

2870656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2870656 is about 1694.3010358257. The cubic root of 2870656 is about 142.1216969034.

The spelling of 2870656 in words is "two million, eight hundred seventy thousand, six hundred fifty-six".