686450446 has 32 divisors (see below), whose sum is σ = 1208895840. Its totient is φ = 288844800.

The previous prime is 686450441. The next prime is 686450447. The reversal of 686450446 is 644054686.

686450446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686450441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7770 + ... + 37858.

It is an arithmetic number, because the mean of its divisors is an integer number (37777995).

Almost surely, 2^686450446 is an apocalyptic number.

686450446 is a deficient number, since it is larger than the sum of its proper divisors (522445394).

686450446 is a wasteful number, since it uses less digits than its factorization.

686450446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30180.

The product of its (nonzero) digits is 552960, while the sum is 43.

The square root of 686450446 is about 26200.1993503866. The cubic root of 686450446 is about 882.1377288804.

The spelling of 686450446 in words is "six hundred eighty-six million, four hundred fifty thousand, four hundred forty-six".