345243661 has 24 divisors (see below), whose sum is σ = 427217280. Its totient is φ = 277385472.

The previous prime is 345243653. The next prime is 345243671. The reversal of 345243661 is 166342543.

It is not a de Polignac number, because 345243661 - 2³ = 345243653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345243641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88396 + ... + 92218.

It is an arithmetic number, because the mean of its divisors is an integer number (17800720).

Almost surely, 2^345243661 is an apocalyptic number.

It is an amenable number.

345243661 is a deficient number, since it is larger than the sum of its proper divisors (81973619).

345243661 is a wasteful number, since it uses less digits than its factorization.

345243661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3946 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 345243661 is about 18580.7335969278. The cubic root of 345243661 is about 701.5229840534.

The spelling of 345243661 in words is "three hundred forty-five million, two hundred forty-three thousand, six hundred sixty-one".