686479246 has 4 divisors (see below), whose sum is σ = 1029718872. Its totient is φ = 343239622.

The previous prime is 686479231. The next prime is 686479303. The reversal of 686479246 is 642974686.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 686479193 and 686479202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171619810 + ... + 171619813.

It is an arithmetic number, because the mean of its divisors is an integer number (257429718).

Almost surely, 2^686479246 is an apocalyptic number.

686479246 is a deficient number, since it is larger than the sum of its proper divisors (343239626).

686479246 is a wasteful number, since it uses less digits than its factorization.

686479246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343239625.

The product of its digits is 3483648, while the sum is 52.

The square root of 686479246 is about 26200.7489587607. The cubic root of 686479246 is about 882.1500653919.

The spelling of 686479246 in words is "six hundred eighty-six million, four hundred seventy-nine thousand, two hundred forty-six".