345663443 has 4 divisors (see below), whose sum is σ = 345703608. Its totient is φ = 345623280.

The previous prime is 345663419. The next prime is 345663449. The reversal of 345663443 is 344366543.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 345663443 - 2⁶ = 345663379 is a prime.

It is a super-2 number, since 2×345663443² = 238966431653228498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345663397 and 345663406.

It is not an unprimeable number, because it can be changed into a prime (345663449) 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, 1346 + ... + 26327.

It is an arithmetic number, because the mean of its divisors is an integer number (86425902).

Almost surely, 2^345663443 is an apocalyptic number.

345663443 is a deficient number, since it is larger than the sum of its proper divisors (40165).

345663443 is a wasteful number, since it uses less digits than its factorization.

345663443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40164.

The product of its digits is 311040, while the sum is 38.

The square root of 345663443 is about 18592.0263285098. The cubic root of 345663443 is about 701.8071963162.

The spelling of 345663443 in words is "three hundred forty-five million, six hundred sixty-three thousand, four hundred forty-three".