6900420681 has 24 divisors (see below), whose sum is σ = 12426732864. Its totient is φ = 3584633760.

The previous prime is 6900420673. The next prime is 6900420707. The reversal of 6900420681 is 1860240096.

It is not a de Polignac number, because 6900420681 - 2³ = 6900420673 is a prime.

It is a super-2 number, since 2×6900420681² = 95231611149545007522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6900420181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4977966 + ... + 4979351.

It is an arithmetic number, because the mean of its divisors is an integer number (517780536).

Almost surely, 2^6900420681 is an apocalyptic number.

It is an amenable number.

6900420681 is a deficient number, since it is larger than the sum of its proper divisors (5526312183).

6900420681 is a wasteful number, since it uses less digits than its factorization.

6900420681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9957341 (or 9957338 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 6900420681 is about 83068.7707926390. The cubic root of 6900420681 is about 1903.8169511936.

The spelling of 6900420681 in words is "six billion, nine hundred million, four hundred twenty thousand, six hundred eighty-one".