2663720401 has 2 divisors, whose sum is σ = 2663720402. Its totient is φ = 2663720400.

The previous prime is 2663720399. The next prime is 2663720453. The reversal of 2663720401 is 1040273662.

2663720401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1701480001 + 962240400 = 41249^2 + 31020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663720401 - 2¹ = 2663720399 is a prime.

Together with 2663720399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2663720461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331860200 + 1331860201.

It is an arithmetic number, because the mean of its divisors is an integer number (1331860201).

Almost surely, 2^2663720401 is an apocalyptic number.

It is an amenable number.

2663720401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663720401 is an equidigital number, since it uses as much as digits as its factorization.

2663720401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 2663720401 is about 51611.2429708877. The cubic root of 2663720401 is about 1386.2116538718.

The spelling of 2663720401 in words is "two billion, six hundred sixty-three million, seven hundred twenty thousand, four hundred one".