345623257 has 8 divisors (see below), whose sum is σ = 395360576. Its totient is φ = 295976592.

The previous prime is 345623251. The next prime is 345623273. The reversal of 345623257 is 752326543.

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-345623257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345623251) 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, 14283 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (49420072).

Almost surely, 2^345623257 is an apocalyptic number.

It is an amenable number.

345623257 is a deficient number, since it is larger than the sum of its proper divisors (49737319).

345623257 is a wasteful number, since it uses less digits than its factorization.

345623257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45327.

The product of its digits is 151200, while the sum is 37.

The square root of 345623257 is about 18590.9455649787. The cubic root of 345623257 is about 701.7799984570.

The spelling of 345623257 in words is "three hundred forty-five million, six hundred twenty-three thousand, two hundred fifty-seven".