4456747681 has 4 divisors (see below), whose sum is σ = 4457266864. Its totient is φ = 4456228500.

The previous prime is 4456747667. The next prime is 4456747703. The reversal of 4456747681 is 1867476544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4456747681 - 2⁵ = 4456747649 is a prime.

It is a super-2 number, since 2×4456747681² = 39725199784197755522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4456747661) 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, 246495 + ... + 263956.

It is an arithmetic number, because the mean of its divisors is an integer number (1114316716).

Almost surely, 2^4456747681 is an apocalyptic number.

It is an amenable number.

4456747681 is a deficient number, since it is larger than the sum of its proper divisors (519183).

4456747681 is an equidigital number, since it uses as much as digits as its factorization.

4456747681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519182.

The product of its digits is 4515840, while the sum is 52.

The square root of 4456747681 is about 66758.8771700064. The cubic root of 4456747681 is about 1645.6571046522.

The spelling of 4456747681 in words is "four billion, four hundred fifty-six million, seven hundred forty-seven thousand, six hundred eighty-one".