1340666734 has 32 divisors (see below), whose sum is σ = 2363074560. Its totient is φ = 564088800.

The previous prime is 1340666731. The next prime is 1340666741. The reversal of 1340666734 is 4376660431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340666731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27049 + ... + 58420.

It is an arithmetic number, because the mean of its divisors is an integer number (73846080).

Almost surely, 2^1340666734 is an apocalyptic number.

1340666734 is a deficient number, since it is larger than the sum of its proper divisors (1022407826).

1340666734 is a wasteful number, since it uses less digits than its factorization.

1340666734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85536.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 1340666734 is about 36615.1161953639. The cubic root of 1340666734 is about 1102.6565910689.

The spelling of 1340666734 in words is "one billion, three hundred forty million, six hundred sixty-six thousand, seven hundred thirty-four".