684727142 has 24 divisors (see below), whose sum is σ = 1156503096. Its totient is φ = 303644000.

The previous prime is 684727129. The next prime is 684727151. The reversal of 684727142 is 241727486.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 684727142.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24584 + ... + 44427.

It is an arithmetic number, because the mean of its divisors is an integer number (48187629).

Almost surely, 2^684727142 is an apocalyptic number.

684727142 is a deficient number, since it is larger than the sum of its proper divisors (471775954).

684727142 is a wasteful number, since it uses less digits than its factorization.

684727142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69076 (or 69065 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The square root of 684727142 is about 26167.2914532628. The cubic root of 684727142 is about 881.3989208147.

The spelling of 684727142 in words is "six hundred eighty-four million, seven hundred twenty-seven thousand, one hundred forty-two".