345121266 has 64 divisors (see below), whose sum is σ = 808455168. Its totient is φ = 96178368.

The previous prime is 345121261. The next prime is 345121321. The reversal of 345121266 is 662121543.

It is not an unprimeable number, because it can be changed into a prime (345121261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504961 + ... + 505643.

It is an arithmetic number, because the mean of its divisors is an integer number (12632112).

Almost surely, 2^345121266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345121266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404227584).

345121266 is an abundant number, since it is smaller than the sum of its proper divisors (463333902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345121266 is a wasteful number, since it uses less digits than its factorization.

345121266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975.

The product of its digits is 8640, while the sum is 30.

The square root of 345121266 is about 18577.4397051908. The cubic root of 345121266 is about 701.4400734756.

It can be divided in two parts, 34512 and 1266, that added together give a triangular number (35778 = T₂₆₇).

The spelling of 345121266 in words is "three hundred forty-five million, one hundred twenty-one thousand, two hundred sixty-six".