345630398 has 4 divisors (see below), whose sum is σ = 518445600. Its totient is φ = 172815198.

The previous prime is 345630367. The next prime is 345630409. The reversal of 345630398 is 893036543.

It is a semiprime because it is the product of two primes.

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86407598 + ... + 86407601.

It is an arithmetic number, because the mean of its divisors is an integer number (129611400).

Almost surely, 2^345630398 is an apocalyptic number.

345630398 is a deficient number, since it is larger than the sum of its proper divisors (172815202).

345630398 is a wasteful number, since it uses less digits than its factorization.

345630398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172815201.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 345630398 is about 18591.1376198446. The cubic root of 345630398 is about 701.7848316353.

The spelling of 345630398 in words is "three hundred forty-five million, six hundred thirty thousand, three hundred ninety-eight".