345246646 has 4 divisors (see below), whose sum is σ = 517869972. Its totient is φ = 172623322.

The previous prime is 345246617. The next prime is 345246647. The reversal of 345246646 is 646642543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646642543 = 21481 ⋅30103.

It is a junction number, because it is equal to n+sod(n) for n = 345246599 and 345246608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345246647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86311660 + ... + 86311663.

It is an arithmetic number, because the mean of its divisors is an integer number (129467493).

Almost surely, 2^345246646 is an apocalyptic number.

345246646 is a deficient number, since it is larger than the sum of its proper divisors (172623326).

345246646 is a wasteful number, since it uses less digits than its factorization.

345246646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172623325.

The product of its digits is 414720, while the sum is 40.

The square root of 345246646 is about 18580.8139218927. The cubic root of 345246646 is about 701.5250058526.

The spelling of 345246646 in words is "three hundred forty-five million, two hundred forty-six thousand, six hundred forty-six".