6900603921 has 20 divisors (see below), whose sum is σ = 10350760112. Its totient is φ = 4600389492.

The previous prime is 6900603889. The next prime is 6900603949. The reversal of 6900603921 is 1293060096.

It is not a de Polignac number, because 6900603921 - 2⁵ = 6900603889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6900603961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155611 + ... + 194976.

Almost surely, 2^6900603921 is an apocalyptic number.

It is an amenable number.

6900603921 is a deficient number, since it is larger than the sum of its proper divisors (3450156191).

6900603921 is an frugal number, since it uses more digits than its factorization.

6900603921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350614 (or 350590 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 6900603921 is about 83069.8737268813. The cubic root of 6900603921 is about 1903.8338029358.

The spelling of 6900603921 in words is "six billion, nine hundred million, six hundred three thousand, nine hundred twenty-one".