685083747838 has 64 divisors (see below), whose sum is σ = 1253056573440. Its totient is φ = 274539019392.

The previous prime is 685083747811. The next prime is 685083747839. The reversal of 685083747838 is 838747380586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685083747839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12882768 + ... + 12935836.

It is an arithmetic number, because the mean of its divisors is an integer number (19579008960).

Almost surely, 2^685083747838 is an apocalyptic number.

685083747838 is a deficient number, since it is larger than the sum of its proper divisors (567972825602).

685083747838 is a wasteful number, since it uses less digits than its factorization.

685083747838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54001.

The product of its (nonzero) digits is 216760320, while the sum is 67.

The spelling of 685083747838 in words is "six hundred eighty-five billion, eighty-three million, seven hundred forty-seven thousand, eight hundred thirty-eight".