345280663 has 16 divisors (see below), whose sum is σ = 426045760. Its totient is φ = 272491776.

The previous prime is 345280657. The next prime is 345280723. The reversal of 345280663 is 366082543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345280663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345380663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32581 + ... + 41857.

It is an arithmetic number, because the mean of its divisors is an integer number (26627860).

Almost surely, 2^345280663 is an apocalyptic number.

345280663 is a deficient number, since it is larger than the sum of its proper divisors (80765097).

345280663 is a wasteful number, since it uses less digits than its factorization.

345280663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 345280663 is about 18581.7292790526. The cubic root of 345280663 is about 701.5480454126.

The spelling of 345280663 in words is "three hundred forty-five million, two hundred eighty thousand, six hundred sixty-three".