345664471 has 4 divisors (see below), whose sum is σ = 355006792. Its totient is φ = 336322152.

The previous prime is 345664469. The next prime is 345664489. The reversal of 345664471 is 174466543.

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 345664471 - 2¹ = 345664469 is a prime.

It is a super-3 number, since 3×345664471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345664411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4671105 + ... + 4671178.

It is an arithmetic number, because the mean of its divisors is an integer number (88751698).

Almost surely, 2^345664471 is an apocalyptic number.

345664471 is a deficient number, since it is larger than the sum of its proper divisors (9342321).

345664471 is an equidigital number, since it uses as much as digits as its factorization.

345664471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342320.

The product of its digits is 241920, while the sum is 40.

The square root of 345664471 is about 18592.0539747495. The cubic root of 345664471 is about 701.8078920383.

The spelling of 345664471 in words is "three hundred forty-five million, six hundred sixty-four thousand, four hundred seventy-one".