345781247 has 8 divisors (see below), whose sum is σ = 415977600. Its totient is φ = 280784664.

The previous prime is 345781231. The next prime is 345781291. The reversal of 345781247 is 742187543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345781247 - 2⁴ = 345781231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345751247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299797 + ... + 1300062.

It is an arithmetic number, because the mean of its divisors is an integer number (51997200).

Almost surely, 2^345781247 is an apocalyptic number.

345781247 is a deficient number, since it is larger than the sum of its proper divisors (70196353).

345781247 is a wasteful number, since it uses less digits than its factorization.

345781247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599885.

The product of its digits is 188160, while the sum is 41.

The square root of 345781247 is about 18595.1941909731. The cubic root of 345781247 is about 701.8869138433.

The spelling of 345781247 in words is "three hundred forty-five million, seven hundred eighty-one thousand, two hundred forty-seven".