1247914066 has 24 divisors (see below), whose sum is σ = 2178731520. Its totient is φ = 534513672.

The previous prime is 1247914043. The next prime is 1247914067. The reversal of 1247914066 is 6604197421.

It is a super-2 number, since 2×1247914066² = 3114579032241304712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1247914067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279931 + ... + 284353.

It is an arithmetic number, because the mean of its divisors is an integer number (90780480).

Almost surely, 2^1247914066 is an apocalyptic number.

1247914066 is a deficient number, since it is larger than the sum of its proper divisors (930817454).

1247914066 is a wasteful number, since it uses less digits than its factorization.

1247914066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318 (or 7311 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1247914066 is about 35325.8271806903. The cubic root of 1247914066 is about 1076.6178102588.

The spelling of 1247914066 in words is "one billion, two hundred forty-seven million, nine hundred fourteen thousand, sixty-six".