2621772983 has 4 divisors (see below), whose sum is σ = 2622042888. Its totient is φ = 2621503080.

The previous prime is 2621772977. The next prime is 2621772991. The reversal of 2621772983 is 3892771262.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2621772983 - 2¹² = 2621768887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621772383) 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, 119816 + ... + 139997.

It is an arithmetic number, because the mean of its divisors is an integer number (655510722).

Almost surely, 2^2621772983 is an apocalyptic number.

2621772983 is a deficient number, since it is larger than the sum of its proper divisors (269905).

2621772983 is a wasteful number, since it uses less digits than its factorization.

2621772983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269904.

The product of its digits is 508032, while the sum is 47.

The square root of 2621772983 is about 51203.2516838530. The cubic root of 2621772983 is about 1378.8965805066.

The spelling of 2621772983 in words is "two billion, six hundred twenty-one million, seven hundred seventy-two thousand, nine hundred eighty-three".