2663730 has 48 divisors (see below), whose sum is σ = 7337304. Its totient is φ = 668160.

The previous prime is 2663711. The next prime is 2663761. The reversal of 2663730 is 373662.

2663730 = 301² + 302² + ... + 327².

2663730 is a `hidden beast` number, since 26 + 637 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1580049 + 1083681 = 1257^2 + 1041^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2663694 and 2663703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660 + ... + 2400.

2^2663730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2663730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3668652).

2663730 is an abundant number, since it is smaller than the sum of its proper divisors (4673574).

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

2663730 is a wasteful number, since it uses less digits than its factorization.

2663730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 2663730 is about 1632.0937473074. The cubic root of 2663730 is about 138.6213318990.

The spelling of 2663730 in words is "two million, six hundred sixty-three thousand, seven hundred thirty".