345406587 has 4 divisors (see below), whose sum is σ = 460542120. Its totient is φ = 230271056.

The previous prime is 345406553. The next prime is 345406603. The reversal of 345406587 is 785604543.

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 345406587 - 2⁸ = 345406331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345401587) 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, 57567762 + ... + 57567767.

It is an arithmetic number, because the mean of its divisors is an integer number (115135530).

Almost surely, 2^345406587 is an apocalyptic number.

345406587 is a deficient number, since it is larger than the sum of its proper divisors (115135533).

345406587 is a wasteful number, since it uses less digits than its factorization.

345406587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115135532.

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 345406587 is about 18585.1173523333. The cubic root of 345406587 is about 701.6333200006.

The spelling of 345406587 in words is "three hundred forty-five million, four hundred six thousand, five hundred eighty-seven".