345203663 has 4 divisors (see below), whose sum is σ = 394518480. Its totient is φ = 295888848.

The previous prime is 345203629. The next prime is 345203671. The reversal of 345203663 is 366302543.

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

It is a cyclic number.

It is not a de Polignac number, because 345203663 - 2¹² = 345199567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345203603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24657398 + ... + 24657411.

It is an arithmetic number, because the mean of its divisors is an integer number (98629620).

Almost surely, 2^345203663 is an apocalyptic number.

345203663 is a deficient number, since it is larger than the sum of its proper divisors (49314817).

345203663 is an equidigital number, since it uses as much as digits as its factorization.

345203663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49314816.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 345203663 is about 18579.6572358050. The cubic root of 345203663 is about 701.4958914971.

Adding to 345203663 its product of nonzero digits (38880), we get a palindrome (345242543).

It can be divided in two parts, 34520 and 3663, that added together give a palindrome (38183).

The spelling of 345203663 in words is "three hundred forty-five million, two hundred three thousand, six hundred sixty-three".