340155647 has 4 divisors (see below), whose sum is σ = 366321480. Its totient is φ = 313989816.

The previous prime is 340155631. The next prime is 340155667. The reversal of 340155647 is 746551043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340155647 - 2⁴ = 340155631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340155617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13082897 + ... + 13082922.

It is an arithmetic number, because the mean of its divisors is an integer number (91580370).

Almost surely, 2^340155647 is an apocalyptic number.

340155647 is a deficient number, since it is larger than the sum of its proper divisors (26165833).

340155647 is a wasteful number, since it uses less digits than its factorization.

340155647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26165832.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 340155647 is about 18443.3090035384. The cubic root of 340155647 is about 698.0596926807.

The spelling of 340155647 in words is "three hundred forty million, one hundred fifty-five thousand, six hundred forty-seven".