684590446 has 16 divisors (see below), whose sum is σ = 1072310688. Its totient is φ = 327175200.

The previous prime is 684590441. The next prime is 684590461. The reversal of 684590446 is 644095486.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 684590396 and 684590405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684590441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69976 + ... + 79156.

It is an arithmetic number, because the mean of its divisors is an integer number (67019418).

Almost surely, 2^684590446 is an apocalyptic number.

684590446 is a deficient number, since it is larger than the sum of its proper divisors (387720242).

684590446 is a wasteful number, since it uses less digits than its factorization.

684590446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 684590446 is about 26164.6793597781. The cubic root of 684590446 is about 881.3402640067.

The spelling of 684590446 in words is "six hundred eighty-four million, five hundred ninety thousand, four hundred forty-six".