340256747 has 4 divisors (see below), whose sum is σ = 340294416. Its totient is φ = 340219080.

The previous prime is 340256743. The next prime is 340256783. The reversal of 340256747 is 747652043.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 340256747 - 2² = 340256743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340256747.

It is not an unprimeable number, because it can be changed into a prime (340256743) 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, 3713 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (85073604).

Almost surely, 2^340256747 is an apocalyptic number.

340256747 is a deficient number, since it is larger than the sum of its proper divisors (37669).

340256747 is a wasteful number, since it uses less digits than its factorization.

340256747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37668.

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 340256747 is about 18446.0496312896. The cubic root of 340256747 is about 698.1288442047.

The spelling of 340256747 in words is "three hundred forty million, two hundred fifty-six thousand, seven hundred forty-seven".