345663445 has 4 divisors (see below), whose sum is σ = 414796140. Its totient is φ = 276530752.

The previous prime is 345663419. The next prime is 345663449. The reversal of 345663445 is 544366543.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173765124 + 171898321 = 13182^2 + 13111^2 .

It is a cyclic number.

It is not a de Polignac number, because 345663445 - 2⁷ = 345663317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345663398 and 345663407.

It is a congruent number.

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, 34566340 + ... + 34566349.

It is an arithmetic number, because the mean of its divisors is an integer number (103699035).

Almost surely, 2^345663445 is an apocalyptic number.

It is an amenable number.

345663445 is a deficient number, since it is larger than the sum of its proper divisors (69132695).

345663445 is an equidigital number, since it uses as much as digits as its factorization.

345663445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69132694.

The product of its digits is 518400, while the sum is 40.

The square root of 345663445 is about 18592.0263822963. The cubic root of 345663445 is about 701.8071976698.

The spelling of 345663445 in words is "three hundred forty-five million, six hundred sixty-three thousand, four hundred forty-five".