6921701 has 4 divisors (see below), whose sum is σ = 7108812. Its totient is φ = 6734592.

The previous prime is 6921671. The next prime is 6921709. The reversal of 6921701 is 1071296.

6921701 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4202500 + 2719201 = 2050^2 + 1649^2 .

It is not a de Polignac number, because 6921701 - 2⁶ = 6921637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93500 + ... + 93573.

It is an arithmetic number, because the mean of its divisors is an integer number (1777203).

Almost surely, 2^6921701 is an apocalyptic number.

It is an amenable number.

6921701 is a deficient number, since it is larger than the sum of its proper divisors (187111).

6921701 is a wasteful number, since it uses less digits than its factorization.

6921701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187110.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 6921701 is about 2630.9125793154. The cubic root of 6921701 is about 190.5772013454.

Adding to 6921701 its reverse (1071296), we get a palindrome (7992997).

The spelling of 6921701 in words is "six million, nine hundred twenty-one thousand, seven hundred one".