2563650 has 72 divisors (see below), whose sum is σ = 7176624. Its totient is φ = 680400.

The previous prime is 2563643. The next prime is 2563657. The reversal of 2563650 is 563652.

2563650 is a `hidden beast` number, since 2 + 5 + 6 + 3 + 650 = 666.

It is an interprime number because it is at equal distance from previous prime (2563643) and next prime (2563657).

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is not an unprimeable number, because it can be changed into a prime (2563657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12045 + ... + 12255.

2^2563650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2563650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3588312).

2563650 is an abundant number, since it is smaller than the sum of its proper divisors (4612974).

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

2563650 is a wasteful number, since it uses less digits than its factorization.

2563650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2563650 is about 1601.1402187191. The cubic root of 2563650 is about 136.8630595701.

The spelling of 2563650 in words is "two million, five hundred sixty-three thousand, six hundred fifty".