1246668947 has 4 divisors (see below), whose sum is σ = 1247006640. Its totient is φ = 1246331256.

The previous prime is 1246668889. The next prime is 1246668953. The reversal of 1246668947 is 7498666421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7498666421 = 18133 ⋅413537.

It is a cyclic number.

It is not a de Polignac number, because 1246668947 - 2¹⁰ = 1246667923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246668847) 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, 163247 + ... + 170712.

It is an arithmetic number, because the mean of its divisors is an integer number (311751660).

Almost surely, 2^1246668947 is an apocalyptic number.

1246668947 is a deficient number, since it is larger than the sum of its proper divisors (337693).

1246668947 is an equidigital number, since it uses as much as digits as its factorization.

1246668947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337692.

The product of its digits is 3483648, while the sum is 53.

The square root of 1246668947 is about 35308.1994301607. The cubic root of 1246668947 is about 1076.2596222998.

The spelling of 1246668947 in words is "one billion, two hundred forty-six million, six hundred sixty-eight thousand, nine hundred forty-seven".