684141946 has 12 divisors (see below), whose sum is σ = 1072772442. Its totient is φ = 327197816.

The previous prime is 684141919. The next prime is 684141947. The reversal of 684141946 is 649141486.

It can be written as a sum of positive squares in only one way, i.e., 634284225 + 49857721 = 25185^2 + 7061^2 .

It is not an unprimeable number, because it can be changed into a prime (684141947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322261 + ... + 324376.

Almost surely, 2^684141946 is an apocalyptic number.

684141946 is a deficient number, since it is larger than the sum of its proper divisors (388630496).

684141946 is a wasteful number, since it uses less digits than its factorization.

684141946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646685 (or 646662 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 684141946 is about 26156.1072409485. The cubic root of 684141946 is about 881.1477559833.

The spelling of 684141946 in words is "six hundred eighty-four million, one hundred forty-one thousand, nine hundred forty-six".