345565642 has 16 divisors (see below), whose sum is σ = 524361600. Its totient is φ = 170784400.

The previous prime is 345565621. The next prime is 345565669. The reversal of 345565642 is 246565543.

It is a happy number.

It is a super-2 number, since 2×345565642² = 238831225861744328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345565595 and 345565604.

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, 168459 + ... + 170497.

It is an arithmetic number, because the mean of its divisors is an integer number (32772600).

Almost surely, 2^345565642 is an apocalyptic number.

345565642 is a deficient number, since it is larger than the sum of its proper divisors (178795958).

345565642 is a wasteful number, since it uses less digits than its factorization.

345565642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981.

The product of its digits is 432000, while the sum is 40.

The square root of 345565642 is about 18589.3959557593. The cubic root of 345565642 is about 701.7410009834.

Subtracting from 345565642 its reverse (246565543), we obtain a palindrome (99000099).

The spelling of 345565642 in words is "three hundred forty-five million, five hundred sixty-five thousand, six hundred forty-two".