345636446 has 4 divisors (see below), whose sum is σ = 518454672. Its totient is φ = 172818222.

The previous prime is 345636439. The next prime is 345636521. The reversal of 345636446 is 644636543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644636543 = 487 ⋅1323689.

It is a super-3 number, since 3×345636446³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86409110 + ... + 86409113.

It is an arithmetic number, because the mean of its divisors is an integer number (129613668).

Almost surely, 2^345636446 is an apocalyptic number.

345636446 is a deficient number, since it is larger than the sum of its proper divisors (172818226).

345636446 is a wasteful number, since it uses less digits than its factorization.

345636446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172818225.

The product of its digits is 622080, while the sum is 41.

The square root of 345636446 is about 18591.3002772802. The cubic root of 345636446 is about 701.7889249962.

The spelling of 345636446 in words is "three hundred forty-five million, six hundred thirty-six thousand, four hundred forty-six".