685355702352 has 40 divisors (see below), whose sum is σ = 1773458068800. Its totient is φ = 228070502400.

The previous prime is 685355702347. The next prime is 685355702357. The reversal of 685355702352 is 253207553586.

It is an interprime number because it is at equal distance from previous prime (685355702347) and next prime (685355702357).

It is a junction number, because it is equal to n+sod(n) for n = 685355702295 and 685355702304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685355702357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11889649 + ... + 11947152.

It is an arithmetic number, because the mean of its divisors is an integer number (44336451720).

Almost surely, 2^685355702352 is an apocalyptic number.

It is an amenable number.

685355702352 is an abundant number, since it is smaller than the sum of its proper divisors (1088102366448).

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

685355702352 is a wasteful number, since it uses less digits than its factorization.

685355702352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23837411 (or 23837405 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 51.

The spelling of 685355702352 in words is "six hundred eighty-five billion, three hundred fifty-five million, seven hundred two thousand, three hundred fifty-two".