2668756403 has 4 divisors (see below), whose sum is σ = 2698742520. Its totient is φ = 2638770288.

The previous prime is 2668756399. The next prime is 2668756417. The reversal of 2668756403 is 3046578662.

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 2668756403 - 2² = 2668756399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668756463) 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, 14992925 + ... + 14993102.

It is an arithmetic number, because the mean of its divisors is an integer number (674685630).

Almost surely, 2^2668756403 is an apocalyptic number.

2668756403 is a deficient number, since it is larger than the sum of its proper divisors (29986117).

2668756403 is an equidigital number, since it uses as much as digits as its factorization.

2668756403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29986116.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The square root of 2668756403 is about 51660.0077719700. The cubic root of 2668756403 is about 1387.0846896821.

The spelling of 2668756403 in words is "two billion, six hundred sixty-eight million, seven hundred fifty-six thousand, four hundred three".