2069721 has 24 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 1310400.

The previous prime is 2069713. The next prime is 2069723. The reversal of 2069721 is 1279602.

It is not a de Polignac number, because 2069721 - 2³ = 2069713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2069723) 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 23 ways as a sum of consecutive naturals, for example, 26160 + ... + 26238.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^2069721 is an apocalyptic number.

It is an amenable number.

2069721 is a deficient number, since it is larger than the sum of its proper divisors (1075239).

2069721 is a wasteful number, since it uses less digits than its factorization.

2069721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2069721 is about 1438.6524945240. The cubic root of 2069721 is about 127.4394637652.

The spelling of 2069721 in words is "two million, sixty-nine thousand, seven hundred twenty-one".