345407 has 4 divisors (see below), whose sum is σ = 347256. Its totient is φ = 343560.

The previous prime is 345379. The next prime is 345413. The reversal of 345407 is 704543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704543 = 7 ⋅100649.

It is a cyclic number.

It is not a de Polignac number, because 345407 - 2¹² = 341311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345407.

It is not an unprimeable number, because it can be changed into a prime (345487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (86814).

2³⁴⁵⁴⁰⁷ is an apocalyptic number.

345407 is a deficient number, since it is larger than the sum of its proper divisors (1849).

345407 is a wasteful number, since it uses less digits than its factorization.

345407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 345407 is about 587.7133655108. The cubic root of 345407 is about 70.1633599646.

The spelling of 345407 in words is "three hundred forty-five thousand, four hundred seven".