345223644 has 24 divisors (see below), whose sum is σ = 818728848. Its totient is φ = 113187840.

The previous prime is 345223639. The next prime is 345223661. The reversal of 345223644 is 446322543.

345223644 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

345223644 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235077 + ... + 236540.

It is an arithmetic number, because the mean of its divisors is an integer number (34113702).

Almost surely, 2^345223644 is an apocalyptic number.

It is an amenable number.

345223644 is an abundant number, since it is smaller than the sum of its proper divisors (473505204).

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

345223644 is a wasteful number, since it uses less digits than its factorization.

345223644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471685 (or 471683 counting only the distinct ones).

The product of its digits is 69120, while the sum is 33.

The square root of 345223644 is about 18580.1949397739. The cubic root of 345223644 is about 701.5094258446.

The spelling of 345223644 in words is "three hundred forty-five million, two hundred twenty-three thousand, six hundred forty-four".