685270037653 has 8 divisors (see below), whose sum is σ = 721740575520. Its totient is φ = 648839869200.

The previous prime is 685270037609. The next prime is 685270037713. The reversal of 685270037653 is 356730072586.

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

It is a de Polignac number, because none of the positive numbers 2^k-685270037653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 685270037653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685270037453) 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, 10057498 + ... + 10125403.

It is an arithmetic number, because the mean of its divisors is an integer number (90217571940).

Almost surely, 2^685270037653 is an apocalyptic number.

It is an amenable number.

685270037653 is a deficient number, since it is larger than the sum of its proper divisors (36470537867).

685270037653 is a wasteful number, since it uses less digits than its factorization.

685270037653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20184707.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 685270037653 in words is "six hundred eighty-five billion, two hundred seventy million, thirty-seven thousand, six hundred fifty-three".