345677407 has 4 divisors (see below), whose sum is σ = 345948120. Its totient is φ = 345406696.

The previous prime is 345677399. The next prime is 345677417. The reversal of 345677407 is 704776543.

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 345677407 - 2³ = 345677399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345677417) 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, 133432 + ... + 135997.

It is an arithmetic number, because the mean of its divisors is an integer number (86487030).

Almost surely, 2^345677407 is an apocalyptic number.

345677407 is a deficient number, since it is larger than the sum of its proper divisors (270713).

345677407 is a wasteful number, since it uses less digits than its factorization.

345677407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270712.

The product of its (nonzero) digits is 493920, while the sum is 43.

The square root of 345677407 is about 18592.4018620511. The cubic root of 345677407 is about 701.8166466490.

The spelling of 345677407 in words is "three hundred forty-five million, six hundred seventy-seven thousand, four hundred seven".