6742968457 has 2 divisors, whose sum is σ = 6742968458. Its totient is φ = 6742968456.

The previous prime is 6742968409. The next prime is 6742968469. The reversal of 6742968457 is 7548692476.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6741066816 + 1901641 = 82104^2 + 1379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6742968457 is a prime.

It is a super-2 number, since 2×6742968457² = 90935247224193921698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6742968497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3371484228 + 3371484229.

It is an arithmetic number, because the mean of its divisors is an integer number (3371484229).

Almost surely, 2^6742968457 is an apocalyptic number.

It is an amenable number.

6742968457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6742968457 is an equidigital number, since it uses as much as digits as its factorization.

6742968457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 58.

The square root of 6742968457 is about 82115.5798676475. The cubic root of 6742968457 is about 1889.2251106159.

The spelling of 6742968457 in words is "six billion, seven hundred forty-two million, nine hundred sixty-eight thousand, four hundred fifty-seven".