685247446 has 8 divisors (see below), whose sum is σ = 1106938224. Its totient is φ = 316268040.

The previous prime is 685247429. The next prime is 685247471. The reversal of 685247446 is 644742586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 685247396 and 685247405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13177810 + ... + 13177861.

It is an arithmetic number, because the mean of its divisors is an integer number (138367278).

Almost surely, 2^685247446 is an apocalyptic number.

685247446 is a deficient number, since it is larger than the sum of its proper divisors (421690778).

685247446 is a wasteful number, since it uses less digits than its factorization.

685247446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355686.

The product of its digits is 1290240, while the sum is 46.

The square root of 685247446 is about 26177.2314426106. The cubic root of 685247446 is about 881.6221139901.

The spelling of 685247446 in words is "six hundred eighty-five million, two hundred forty-seven thousand, four hundred forty-six".