345342644 has 12 divisors (see below), whose sum is σ = 604823268. Its totient is φ = 172536000.

The previous prime is 345342611. The next prime is 345342649. The reversal of 345342644 is 446243543.

It can be written as a sum of positive squares in 2 ways, for example, as 8179600 + 337163044 = 2860^2 + 18362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345342649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27977 + ... + 38384.

It is an arithmetic number, because the mean of its divisors is an integer number (50401939).

Almost surely, 2^345342644 is an apocalyptic number.

It is an amenable number.

345342644 is a deficient number, since it is larger than the sum of its proper divisors (259480624).

345342644 is a wasteful number, since it uses less digits than its factorization.

345342644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67666 (or 67664 counting only the distinct ones).

The product of its digits is 138240, while the sum is 35.

The square root of 345342644 is about 18583.3969983962. The cubic root of 345342644 is about 701.5900209729.

The spelling of 345342644 in words is "three hundred forty-five million, three hundred forty-two thousand, six hundred forty-four".