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2663245 = 51340973
BaseRepresentation
bin1010001010001101001101
312000022021201
422022031031
51140210440
6133025501
731431364
oct12121515
95008251
102663245
111559a32
12a85291
137232b0
144d47db
1537919a
hex28a34d

2663245 has 8 divisors (see below), whose sum is σ = 3441816. Its totient is φ = 1966656.

The previous prime is 2663231. The next prime is 2663251. The reversal of 2663245 is 5423662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 514089 + 2149156 = 717^2 + 1466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2663245 - 213 = 2655053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20422 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (430227).

22663245 is an apocalyptic number.

It is an amenable number.

2663245 is a deficient number, since it is larger than the sum of its proper divisors (778571).

2663245 is a wasteful number, since it uses less digits than its factorization.

2663245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40991.

The product of its digits is 8640, while the sum is 28.

The square root of 2663245 is about 1631.9451583923. The cubic root of 2663245 is about 138.6129182051.

The spelling of 2663245 in words is "two million, six hundred sixty-three thousand, two hundred forty-five".

Divisors: 1 5 13 65 40973 204865 532649 2663245