7036721 has 4 divisors (see below), whose sum is σ = 7263744. Its totient is φ = 6809700.

The previous prime is 7036717. The next prime is 7036741. The reversal of 7036721 is 1276307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7036721 - 2² = 7036717 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7036741) 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, 113465 + ... + 113526.

It is an arithmetic number, because the mean of its divisors is an integer number (1815936).

Almost surely, 2^7036721 is an apocalyptic number.

It is an amenable number.

7036721 is a deficient number, since it is larger than the sum of its proper divisors (227023).

7036721 is a wasteful number, since it uses less digits than its factorization.

7036721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227022.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 7036721 is about 2652.6818505053. The cubic root of 7036721 is about 191.6270338553.

The spelling of 7036721 in words is "seven million, thirty-six thousand, seven hundred twenty-one".