616664343 has 4 divisors (see below), whose sum is σ = 822219128. Its totient is φ = 411109560.

The previous prime is 616664317. The next prime is 616664351. The reversal of 616664343 is 343466616.

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

It is not a de Polignac number, because 616664343 - 2¹⁰ = 616663319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616664303) 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 in 3 ways as a sum of consecutive naturals, for example, 102777388 + ... + 102777393.

It is an arithmetic number, because the mean of its divisors is an integer number (205554782).

Almost surely, 2^616664343 is an apocalyptic number.

616664343 is a deficient number, since it is larger than the sum of its proper divisors (205554785).

616664343 is a wasteful number, since it uses less digits than its factorization.

616664343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205554784.

The product of its digits is 186624, while the sum is 39.

The square root of 616664343 is about 24832.7272565862. The cubic root of 616664343 is about 851.1699428119.

The spelling of 616664343 in words is "six hundred sixteen million, six hundred sixty-four thousand, three hundred forty-three".