6721206701 has 16 divisors (see below), whose sum is σ = 7431334848. Its totient is φ = 6028032000.

The previous prime is 6721206643. The next prime is 6721206703. The reversal of 6721206701 is 1076021276.

It is a cyclic number.

It is not a de Polignac number, because 6721206701 - 2³⁰ = 5647464877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721206703) 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, 303725 + ... + 325101.

It is an arithmetic number, because the mean of its divisors is an integer number (464458428).

Almost surely, 2^6721206701 is an apocalyptic number.

It is an amenable number.

6721206701 is a deficient number, since it is larger than the sum of its proper divisors (710128147).

6721206701 is a wasteful number, since it uses less digits than its factorization.

6721206701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21772.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 6721206701 is about 81982.9659197568. The cubic root of 6721206701 is about 1887.1905386609.

Adding to 6721206701 its reverse (1076021276), we get a palindrome (7797227977).

The spelling of 6721206701 in words is "six billion, seven hundred twenty-one million, two hundred six thousand, seven hundred one".