345540747 has 4 divisors (see below), whose sum is σ = 460721000. Its totient is φ = 230360496.

The previous prime is 345540721. The next prime is 345540751. The reversal of 345540747 is 747045543.

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

It is not a de Polignac number, because 345540747 - 2⁶ = 345540683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345540047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57590122 + ... + 57590127.

It is an arithmetic number, because the mean of its divisors is an integer number (115180250).

Almost surely, 2^345540747 is an apocalyptic number.

345540747 is a deficient number, since it is larger than the sum of its proper divisors (115180253).

345540747 is a wasteful number, since it uses less digits than its factorization.

345540747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115180252.

The product of its (nonzero) digits is 235200, while the sum is 39.

The square root of 345540747 is about 18588.7263415222. The cubic root of 345540747 is about 701.7241491328.

The spelling of 345540747 in words is "three hundred forty-five million, five hundred forty thousand, seven hundred forty-seven".