6921061 has 8 divisors (see below), whose sum is σ = 7937280. Its totient is φ = 5911728.

The previous prime is 6921043. The next prime is 6921077. The reversal of 6921061 is 1601296.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6921061 - 2¹³ = 6912869 is a prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 6921061 parts by 3720 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921041) 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 7 ways as a sum of consecutive naturals, for example, 660 + ... + 3778.

It is an arithmetic number, because the mean of its divisors is an integer number (992160).

Almost surely, 2^6921061 is an apocalyptic number.

It is an amenable number.

6921061 is a deficient number, since it is larger than the sum of its proper divisors (1016219).

6921061 is a wasteful number, since it uses less digits than its factorization.

6921061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 6921061 is about 2630.7909457044. The cubic root of 6921061 is about 190.5713273958.

The spelling of 6921061 in words is "six million, nine hundred twenty-one thousand, sixty-one".