684007642 has 8 divisors (see below), whose sum is σ = 1027974816. Its totient is φ = 341349372.

The previous prime is 684007609. The next prime is 684007651. The reversal of 684007642 is 246700486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325918 + ... + 328009.

It is an arithmetic number, because the mean of its divisors is an integer number (128496852).

Almost surely, 2^684007642 is an apocalyptic number.

684007642 is a deficient number, since it is larger than the sum of its proper divisors (343967174).

684007642 is a wasteful number, since it uses less digits than its factorization.

684007642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654452.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 684007642 is about 26153.5397604225. The cubic root of 684007642 is about 881.0900927972.

The spelling of 684007642 in words is "six hundred eighty-four million, seven thousand, six hundred forty-two".