345780855 has 24 divisors (see below), whose sum is σ = 684976032. Its totient is φ = 158071104.

The previous prime is 345780823. The next prime is 345780859. The reversal of 345780855 is 558087543.

It is not a de Polignac number, because 345780855 - 2⁵ = 345780823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 345780855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345780859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548544 + ... + 549173.

It is an arithmetic number, because the mean of its divisors is an integer number (28540668).

Almost surely, 2^345780855 is an apocalyptic number.

345780855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

345780855 is a deficient number, since it is larger than the sum of its proper divisors (339195177).

345780855 is a wasteful number, since it uses less digits than its factorization.

345780855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097735 (or 1097732 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The square root of 345780855 is about 18595.1836506123. The cubic root of 345780855 is about 701.8866486084.

The spelling of 345780855 in words is "three hundred forty-five million, seven hundred eighty thousand, eight hundred fifty-five".