352689643 has 4 divisors (see below), whose sum is σ = 355025488. Its totient is φ = 350353800.

The previous prime is 352689637. The next prime is 352689653. The reversal of 352689643 is 346986253.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352689643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 352689593 and 352689602.

It is not an unprimeable number, because it can be changed into a prime (352689653) 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, 1167696 + ... + 1167997.

It is an arithmetic number, because the mean of its divisors is an integer number (88756372).

Almost surely, 2^352689643 is an apocalyptic number.

352689643 is a deficient number, since it is larger than the sum of its proper divisors (2335845).

352689643 is a wasteful number, since it uses less digits than its factorization.

352689643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335844.

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

The square root of 352689643 is about 18780.0330936876. The cubic root of 352689643 is about 706.5304798922.

The spelling of 352689643 in words is "three hundred fifty-two million, six hundred eighty-nine thousand, six hundred forty-three".