2396721 has 8 divisors (see below), whose sum is σ = 3203424. Its totient is φ = 1593920.

The previous prime is 2396701. The next prime is 2396731. The reversal of 2396721 is 1276932.

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 2396721 - 2⁷ = 2396593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2396701) 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, 1081 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (400428).

2^2396721 is an apocalyptic number.

It is an amenable number.

2396721 is a deficient number, since it is larger than the sum of its proper divisors (806703).

2396721 is a wasteful number, since it uses less digits than its factorization.

2396721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its digits is 4536, while the sum is 30.

The square root of 2396721 is about 1548.1346840634. The cubic root of 2396721 is about 133.8255880421.

The spelling of 2396721 in words is "two million, three hundred ninety-six thousand, seven hundred twenty-one".