6720401902 has 16 divisors (see below), whose sum is σ = 10263399120. Its totient is φ = 3299586048.

The previous prime is 6720401887. The next prime is 6720401921. The reversal of 6720401902 is 2091040276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36627 + ... + 121582.

It is an arithmetic number, because the mean of its divisors is an integer number (641462445).

Almost surely, 2^6720401902 is an apocalyptic number.

6720401902 is a deficient number, since it is larger than the sum of its proper divisors (3542997218).

6720401902 is a wasteful number, since it uses less digits than its factorization.

6720401902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158595.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6720401902 is about 81978.0574422205. The cubic root of 6720401902 is about 1887.1152114292.

The spelling of 6720401902 in words is "six billion, seven hundred twenty million, four hundred one thousand, nine hundred two".