6896639407 has 24 divisors (see below), whose sum is σ = 8602148160. Its totient is φ = 5493196800.

The previous prime is 6896639377. The next prime is 6896639413. The reversal of 6896639407 is 7049366986.

It is a de Polignac number, because none of the positive numbers 2^k-6896639407 is a prime.

It is a super-2 number, since 2×6896639407² = 95127270220370623298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6896639467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13407 + ... + 118207.

It is an arithmetic number, because the mean of its divisors is an integer number (358422840).

Almost surely, 2^6896639407 is an apocalyptic number.

6896639407 is a deficient number, since it is larger than the sum of its proper divisors (1705508753).

6896639407 is a wasteful number, since it uses less digits than its factorization.

6896639407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104911 (or 104904 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 58.

The square root of 6896639407 is about 83046.0077728003. The cubic root of 6896639407 is about 1903.4691381540.

The spelling of 6896639407 in words is "six billion, eight hundred ninety-six million, six hundred thirty-nine thousand, four hundred seven".