345656491 has 4 divisors (see below), whose sum is σ = 348715512. Its totient is φ = 342597472.

The previous prime is 345656477. The next prime is 345656497. The reversal of 345656491 is 194656543.

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

It is a cyclic number.

It is not a de Polignac number, because 345656491 - 2⁹ = 345655979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345656497) 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, 1529341 + ... + 1529566.

It is an arithmetic number, because the mean of its divisors is an integer number (87178878).

Almost surely, 2^345656491 is an apocalyptic number.

345656491 is a deficient number, since it is larger than the sum of its proper divisors (3059021).

345656491 is a wasteful number, since it uses less digits than its factorization.

345656491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059020.

The product of its digits is 388800, while the sum is 43.

The square root of 345656491 is about 18591.8393657002. The cubic root of 345656491 is about 701.8024913579.

The spelling of 345656491 in words is "three hundred forty-five million, six hundred fifty-six thousand, four hundred ninety-one".