2663620 has 24 divisors (see below), whose sum is σ = 5655384. Its totient is φ = 1053696.

The previous prime is 2663603. The next prime is 2663627. The reversal of 2663620 is 263662.

It can be written as a sum of positive squares in 4 ways, for example, as 937024 + 1726596 = 968^2 + 1314^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2663627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (235641).

2^2663620 is an apocalyptic number.

2663620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663620 is an abundant number, since it is smaller than the sum of its proper divisors (2991764).

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

2663620 is a wasteful number, since it uses less digits than its factorization.

2663620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 2663620 is about 1632.0600479149. The cubic root of 2663620 is about 138.6194237281.

The spelling of 2663620 in words is "two million, six hundred sixty-three thousand, six hundred twenty".