1340666668 has 24 divisors (see below), whose sum is σ = 2561900544. Its totient is φ = 608811600.

The previous prime is 1340666651. The next prime is 1340666671. The reversal of 1340666668 is 8666660431.

It is a super-2 number, since 2×1340666668² = 3594774229372444448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33813 + ... + 61843.

It is an arithmetic number, because the mean of its divisors is an integer number (106745856).

Almost surely, 2^1340666668 is an apocalyptic number.

It is an amenable number.

1340666668 is a deficient number, since it is larger than the sum of its proper divisors (1221233876).

1340666668 is a wasteful number, since it uses less digits than its factorization.

1340666668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29133 (or 29131 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 1340666668 is about 36615.1152940968. The cubic root of 1340666668 is about 1102.6565729746.

The spelling of 1340666668 in words is "one billion, three hundred forty million, six hundred sixty-six thousand, six hundred sixty-eight".