345663457 has 4 divisors (see below), whose sum is σ = 346754196. Its totient is φ = 344572720.

The previous prime is 345663449. The next prime is 345663491. The reversal of 345663457 is 754366543.

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 52432081 + 293231376 = 7241^2 + 17124^2 .

It is a cyclic number.

It is not a de Polignac number, because 345663457 - 2³ = 345663449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345663407) 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, 544894 + ... + 545527.

It is an arithmetic number, because the mean of its divisors is an integer number (86688549).

Almost surely, 2^345663457 is an apocalyptic number.

It is an amenable number.

345663457 is a deficient number, since it is larger than the sum of its proper divisors (1090739).

345663457 is a wasteful number, since it uses less digits than its factorization.

345663457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090738.

The product of its digits is 907200, while the sum is 43.

The square root of 345663457 is about 18592.0267050152. The cubic root of 345663457 is about 701.8072057911.

The spelling of 345663457 in words is "three hundred forty-five million, six hundred sixty-three thousand, four hundred fifty-seven".