345419857 has 8 divisors (see below), whose sum is σ = 347925032. Its totient is φ = 342921600.

The previous prime is 345419843. The next prime is 345419891. The reversal of 345419857 is 758914543.

It can be written as a sum of positive squares in 4 ways, for example, as 23970816 + 321449041 = 4896^2 + 17929^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345419857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345419897) 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, 135757 + ... + 138277.

It is an arithmetic number, because the mean of its divisors is an integer number (43490629).

Almost surely, 2^345419857 is an apocalyptic number.

It is an amenable number.

345419857 is a deficient number, since it is larger than the sum of its proper divisors (2505175).

345419857 is a wasteful number, since it uses less digits than its factorization.

345419857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459.

The product of its digits is 604800, while the sum is 46.

The square root of 345419857 is about 18585.4743549902. The cubic root of 345419857 is about 701.6423051168.

The spelling of 345419857 in words is "three hundred forty-five million, four hundred nineteen thousand, eight hundred fifty-seven".