1340666667 has 16 divisors (see below), whose sum is σ = 2034617760. Its totient is φ = 871977600.

The previous prime is 1340666651. The next prime is 1340666671. The reversal of 1340666667 is 7666660431.

It is not a de Polignac number, because 1340666667 - 2⁴ = 1340666651 is a prime.

It is a super-2 number, since 2×1340666667² = 3594774224009777778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340666167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604434 + ... + 606647.

It is an arithmetic number, because the mean of its divisors is an integer number (127163610).

Almost surely, 2^1340666667 is an apocalyptic number.

1340666667 is a deficient number, since it is larger than the sum of its proper divisors (693951093).

1340666667 is a wasteful number, since it uses less digits than its factorization.

1340666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211131 (or 1211125 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 1340666667 is about 36615.1152804412. The cubic root of 1340666667 is about 1102.6565727004.

The spelling of 1340666667 in words is "one billion, three hundred forty million, six hundred sixty-six thousand, six hundred sixty-seven".