345680709 has 8 divisors (see below), whose sum is σ = 502808352. Its totient is φ = 209503440.

The previous prime is 345680701. The next prime is 345680791. The reversal of 345680709 is 907086543.

It is a happy number.

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

It is not a de Polignac number, because 345680709 - 2³ = 345680701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345680701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5237554 + ... + 5237619.

It is an arithmetic number, because the mean of its divisors is an integer number (62851044).

Almost surely, 2^345680709 is an apocalyptic number.

It is an amenable number.

345680709 is a deficient number, since it is larger than the sum of its proper divisors (157127643).

345680709 is a wasteful number, since it uses less digits than its factorization.

345680709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10475187.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 345680709 is about 18592.4906615547. The cubic root of 345680709 is about 701.8188812866.

The spelling of 345680709 in words is "three hundred forty-five million, six hundred eighty thousand, seven hundred nine".