345258638 has 8 divisors (see below), whose sum is σ = 525617832. Its totient is φ = 170052696.

The previous prime is 345258629. The next prime is 345258643. The reversal of 345258638 is 836852543.

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

It is a super-2 number, since 2×345258638² = 238407054227230088, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288145 + ... + 1288412.

It is an arithmetic number, because the mean of its divisors is an integer number (65702229).

Almost surely, 2^345258638 is an apocalyptic number.

345258638 is a deficient number, since it is larger than the sum of its proper divisors (180359194).

345258638 is a wasteful number, since it uses less digits than its factorization.

345258638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576626.

The product of its digits is 691200, while the sum is 44.

The square root of 345258638 is about 18581.1366175485. The cubic root of 345258638 is about 701.5331281526.

The spelling of 345258638 in words is "three hundred forty-five million, two hundred fifty-eight thousand, six hundred thirty-eight".