3422721 has 8 divisors (see below), whose sum is σ = 4675104. Its totient is φ = 2226080.

The previous prime is 3422707. The next prime is 3422723. The reversal of 3422721 is 1272243.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3422721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3422723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13791 + ... + 14036.

It is an arithmetic number, because the mean of its divisors is an integer number (584388).

Almost surely, 2^3422721 is an apocalyptic number.

It is an amenable number.

3422721 is a deficient number, since it is larger than the sum of its proper divisors (1252383).

3422721 is a wasteful number, since it uses less digits than its factorization.

3422721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27871.

The product of its digits is 672, while the sum is 21.

The square root of 3422721 is about 1850.0597287655. The cubic root of 3422721 is about 150.7036715912.

Adding to 3422721 its reverse (1272243), we get a palindrome (4694964).

The spelling of 3422721 in words is "three million, four hundred twenty-two thousand, seven hundred twenty-one".