345302666 has 4 divisors (see below), whose sum is σ = 517954002. Its totient is φ = 172651332.

The previous prime is 345302653. The next prime is 345302689. The reversal of 345302666 is 666203543.

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., 248850625 + 96452041 = 15775^2 + 9821^2 .

It is a super-2 number, since 2×345302666² = 238467862293415112, which contains 22 as substring.

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, 86325665 + ... + 86325668.

Almost surely, 2^345302666 is an apocalyptic number.

345302666 is a deficient number, since it is larger than the sum of its proper divisors (172651336).

345302666 is a wasteful number, since it uses less digits than its factorization.

345302666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172651335.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 345302666 is about 18582.3213296940. The cubic root of 345302666 is about 701.5629471389.

The spelling of 345302666 in words is "three hundred forty-five million, three hundred two thousand, six hundred sixty-six".