345564866 has 4 divisors (see below), whose sum is σ = 518347302. Its totient is φ = 172782432.

The previous prime is 345564853. The next prime is 345564871. The reversal of 345564866 is 668465543.

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 only one way, i.e., 292581025 + 52983841 = 17105^2 + 7279^2 .

It is a super-2 number, since 2×345564866² = 238830153227195912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345564866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86391215 + ... + 86391218.

Almost surely, 2^345564866 is an apocalyptic number.

345564866 is a deficient number, since it is larger than the sum of its proper divisors (172782436).

345564866 is a wasteful number, since it uses less digits than its factorization.

345564866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172782435.

The product of its digits is 2073600, while the sum is 47.

The square root of 345564866 is about 18589.3750836331. The cubic root of 345564866 is about 701.7404757080.

The spelling of 345564866 in words is "three hundred forty-five million, five hundred sixty-four thousand, eight hundred sixty-six".