685622748 has 24 divisors (see below), whose sum is σ = 1610385280. Its totient is φ = 227026800.

The previous prime is 685622741. The next prime is 685622759. The reversal of 685622748 is 847226586.

It is a junction number, because it is equal to n+sod(n) for n = 685622697 and 685622706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685622741) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 187378 + ... + 191001.

Almost surely, 2^685622748 is an apocalyptic number.

It is an amenable number.

685622748 is an abundant number, since it is smaller than the sum of its proper divisors (924762532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685622748 is a wasteful number, since it uses less digits than its factorization.

685622748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378537 (or 378535 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 685622748 is about 26184.3989428820. The cubic root of 685622748 is about 881.7830359838.

The spelling of 685622748 in words is "six hundred eighty-five million, six hundred twenty-two thousand, seven hundred forty-eight".