345391870 has 8 divisors (see below), whose sum is σ = 621705384. Its totient is φ = 138156744.

The previous prime is 345391853. The next prime is 345391909. The reversal of 345391870 is 78193543.

345391870 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17269584 + ... + 17269603.

It is an arithmetic number, because the mean of its divisors is an integer number (77713173).

Almost surely, 2^345391870 is an apocalyptic number.

345391870 is a deficient number, since it is larger than the sum of its proper divisors (276313514).

345391870 is a wasteful number, since it uses less digits than its factorization.

345391870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34539194.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 345391870 is about 18584.7214130317. The cubic root of 345391870 is about 701.6233548517.

The spelling of 345391870 in words is "three hundred forty-five million, three hundred ninety-one thousand, eight hundred seventy".