684146442 has 32 divisors (see below), whose sum is σ = 1565194752. Its totient is φ = 195291504.

The previous prime is 684146423. The next prime is 684146473. The reversal of 684146442 is 244641486.

684146442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 684146442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42993 + ... + 56715.

It is an arithmetic number, because the mean of its divisors is an integer number (48912336).

Almost surely, 2^684146442 is an apocalyptic number.

684146442 is an abundant number, since it is smaller than the sum of its proper divisors (881048310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684146442 is a wasteful number, since it uses less digits than its factorization.

684146442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14922.

The product of its digits is 147456, while the sum is 39.

The square root of 684146442 is about 26156.1931863182. The cubic root of 684146442 is about 881.1496862024.

The spelling of 684146442 in words is "six hundred eighty-four million, one hundred forty-six thousand, four hundred forty-two".