6896481621 has 16 divisors (see below), whose sum is σ = 9757739520. Its totient is φ = 4323215600.

The previous prime is 6896481583. The next prime is 6896481649. The reversal of 6896481621 is 1261846986.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6896481621 is a prime.

It is a super-2 number, since 2×6896481621² = 95122917497581575282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6896481521) 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, 842955 + ... + 851096.

It is an arithmetic number, because the mean of its divisors is an integer number (609858720).

Almost surely, 2^6896481621 is an apocalyptic number.

It is an amenable number.

6896481621 is a deficient number, since it is larger than the sum of its proper divisors (2861257899).

6896481621 is a wasteful number, since it uses less digits than its factorization.

6896481621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694136.

The product of its digits is 995328, while the sum is 51.

The square root of 6896481621 is about 83045.0577758845. The cubic root of 6896481621 is about 1903.4546217568.

The spelling of 6896481621 in words is "six billion, eight hundred ninety-six million, four hundred eighty-one thousand, six hundred twenty-one".