345992644 has 12 divisors (see below), whose sum is σ = 608625724. Its totient is φ = 172099584.

The previous prime is 345992629. The next prime is 345992677. The reversal of 345992644 is 446299543.

It can be written as a sum of positive squares in 2 ways, for example, as 152226244 + 193766400 = 12338^2 + 13920^2 .

It is a super-2 number, since 2×345992644² = 239421819404221472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 345992594 and 345992603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223317 + ... + 224860.

Almost surely, 2^345992644 is an apocalyptic number.

It is an amenable number.

345992644 is a deficient number, since it is larger than the sum of its proper divisors (262633080).

345992644 is a wasteful number, since it uses less digits than its factorization.

345992644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448374 (or 448372 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 345992644 is about 18600.8775061823. The cubic root of 345992644 is about 702.0299200187.

The spelling of 345992644 in words is "three hundred forty-five million, nine hundred ninety-two thousand, six hundred forty-four".