6748147457 has 4 divisors (see below), whose sum is σ = 6748315140. Its totient is φ = 6747979776.

The previous prime is 6748147451. The next prime is 6748147463. The reversal of 6748147457 is 7547418476.

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

It is an interprime number because it is at equal distance from previous prime (6748147451) and next prime (6748147463).

It can be written as a sum of positive squares in 2 ways, for example, as 5447030416 + 1301117041 = 73804^2 + 36071^2 .

It is a cyclic number.

It is not a de Polignac number, because 6748147457 - 2⁸ = 6748147201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6748147399 and 6748147408.

It is not an unprimeable number, because it can be changed into a prime (6748147451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16769 + ... + 117377.

It is an arithmetic number, because the mean of its divisors is an integer number (1687078785).

It is a Poulet number, since it divides 2^6748147456-1.

Almost surely, 2^6748147457 is an apocalyptic number.

6748147457 is the 67073-rd pentagonal number.

It is an amenable number.

6748147457 is a deficient number, since it is larger than the sum of its proper divisors (167683).

6748147457 is a wasteful number, since it uses less digits than its factorization.

6748147457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167682.

The product of its digits is 5268480, while the sum is 53.

The square root of 6748147457 is about 82147.1086344492. The cubic root of 6748147457 is about 1889.7086658436.

The spelling of 6748147457 in words is "six billion, seven hundred forty-eight million, one hundred forty-seven thousand, four hundred fifty-seven".