2625864 has 64 divisors (see below), whose sum is σ = 7050240. Its totient is φ = 813120.

The previous prime is 2625859. The next prime is 2625869. The reversal of 2625864 is 4685262.

It is an interprime number because it is at equal distance from previous prime (2625859) and next prime (2625869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36949 + ... + 37019.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2^2625864 is an apocalyptic number.

2625864 is a gapful number since it is divisible by the number (24) 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 2625864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525120).

2625864 is an abundant number, since it is smaller than the sum of its proper divisors (4424376).

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

2625864 is a wasteful number, since it uses less digits than its factorization.

2625864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 166 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 2625864 is about 1620.4517888540. The cubic root of 2625864 is about 137.9613418286.

The spelling of 2625864 in words is "two million, six hundred twenty-five thousand, eight hundred sixty-four".