7209641 has 2 divisors, whose sum is σ = 7209642. Its totient is φ = 7209640.

The previous prime is 7209637. The next prime is 7209647. The reversal of 7209641 is 1469027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4713241 + 2496400 = 2171^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 7209641 - 2² = 7209637 is a prime.

It is not a weakly prime, because it can be changed into another prime (7209647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3604820 + 3604821.

It is an arithmetic number, because the mean of its divisors is an integer number (3604821).

Almost surely, 2^7209641 is an apocalyptic number.

It is an amenable number.

7209641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7209641 is an equidigital number, since it uses as much as digits as its factorization.

7209641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7209641 is about 2685.0774662940. The cubic root of 7209641 is about 193.1840262874.

The spelling of 7209641 in words is "seven million, two hundred nine thousand, six hundred forty-one".