684515396 has 12 divisors (see below), whose sum is σ = 1198699152. Its totient is φ = 342029928.

The previous prime is 684515383. The next prime is 684515417. The reversal of 684515396 is 693515486.

It is a happy number.

It is a super-2 number, since 2×684515396² = 937122654722073632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 684515396.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50090 + ... + 62273.

It is an arithmetic number, because the mean of its divisors is an integer number (99891596).

Almost surely, 2^684515396 is an apocalyptic number.

It is an amenable number.

684515396 is a deficient number, since it is larger than the sum of its proper divisors (514183756).

684515396 is a wasteful number, since it uses less digits than its factorization.

684515396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113890 (or 113888 counting only the distinct ones).

The product of its digits is 777600, while the sum is 47.

The square root of 684515396 is about 26163.2451351127. The cubic root of 684515396 is about 881.3080564270.

The spelling of 684515396 in words is "six hundred eighty-four million, five hundred fifteen thousand, three hundred ninety-six".