6897824029655 has 16 divisors (see below), whose sum is σ = 8914230474240. Its totient is φ = 5093709504768.

The previous prime is 6897824029627. The next prime is 6897824029739. The reversal of 6897824029655 is 5569204287986.

It is a cyclic number.

It is not a de Polignac number, because 6897824029655 - 2¹² = 6897824025559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4466219 + ... + 5808851.

It is an arithmetic number, because the mean of its divisors is an integer number (557139404640).

Almost surely, 2^{6897824029655} is an apocalyptic number.

6897824029655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6897824029655 is a deficient number, since it is larger than the sum of its proper divisors (2016406444585).

6897824029655 is a wasteful number, since it uses less digits than its factorization.

6897824029655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421690.

The product of its (nonzero) digits is 522547200, while the sum is 71.

The spelling of 6897824029655 in words is "six trillion, eight hundred ninety-seven billion, eight hundred twenty-four million, twenty-nine thousand, six hundred fifty-five".