1683685353687 has 16 divisors (see below), whose sum is σ = 2283028623360. Its totient is φ = 1103400584000.

The previous prime is 1683685353677. The next prime is 1683685353697. The reversal of 1683685353687 is 7863535863861.

It is an interprime number because it is at equal distance from previous prime (1683685353677) and next prime (1683685353697).

It is a cyclic number.

It is not a de Polignac number, because 1683685353687 - 2⁸ = 1683685353431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683685353617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155562 + ... + 7387112.

It is an arithmetic number, because the mean of its divisors is an integer number (142689288960).

Almost surely, 2^{1683685353687} is an apocalyptic number.

1683685353687 is a deficient number, since it is larger than the sum of its proper divisors (599343269673).

1683685353687 is a wasteful number, since it uses less digits than its factorization.

1683685353687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272694.

The product of its digits is 522547200, while the sum is 69.

The spelling of 1683685353687 in words is "one trillion, six hundred eighty-three billion, six hundred eighty-five million, three hundred fifty-three thousand, six hundred eighty-seven".