345689387 has 4 divisors (see below), whose sum is σ = 348009600. Its totient is φ = 343369176.

The previous prime is 345689369. The next prime is 345689389. The reversal of 345689387 is 783986543.

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 345689387 - 2¹⁰ = 345688363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345689389) 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, 1159883 + ... + 1160180.

It is an arithmetic number, because the mean of its divisors is an integer number (87002400).

Almost surely, 2^345689387 is an apocalyptic number.

345689387 is a deficient number, since it is larger than the sum of its proper divisors (2320213).

345689387 is a wasteful number, since it uses less digits than its factorization.

345689387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320212.

The product of its digits is 4354560, while the sum is 53.

The square root of 345689387 is about 18592.7240338795. The cubic root of 345689387 is about 701.8247540792.

The spelling of 345689387 in words is "three hundred forty-five million, six hundred eighty-nine thousand, three hundred eighty-seven".