2621341603 has 4 divisors (see below), whose sum is σ = 2622345880. Its totient is φ = 2620337328.

The previous prime is 2621341589. The next prime is 2621341609. The reversal of 2621341603 is 3061431262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621341603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621341609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498213 + ... + 503446.

It is an arithmetic number, because the mean of its divisors is an integer number (655586470).

Almost surely, 2^2621341603 is an apocalyptic number.

2621341603 is a deficient number, since it is larger than the sum of its proper divisors (1004277).

2621341603 is a wasteful number, since it uses less digits than its factorization.

2621341603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004276.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2621341603 is about 51199.0390827797. The cubic root of 2621341603 is about 1378.8209496215.

Adding to 2621341603 its reverse (3061431262), we get a palindrome (5682772865).

The spelling of 2621341603 in words is "two billion, six hundred twenty-one million, three hundred forty-one thousand, six hundred three".