7270661 has 2 divisors, whose sum is σ = 7270662. Its totient is φ = 7270660.

The previous prime is 7270649. The next prime is 7270663. The reversal of 7270661 is 1660727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6220036 + 1050625 = 2494^2 + 1025^2 .

It is an emirp because it is prime and its reverse (1660727) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7270661 is a prime.

It is a super-2 number, since 2×7270661² = 105725022753842, which contains 22 as substring.

Together with 7270663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7270663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3635330 + 3635331.

It is an arithmetic number, because the mean of its divisors is an integer number (3635331).

Almost surely, 2^7270661 is an apocalyptic number.

It is an amenable number.

7270661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7270661 is an equidigital number, since it uses as much as digits as its factorization.

7270661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 7270661 is about 2696.4163254216. The cubic root of 7270661 is about 193.7275109520.

The spelling of 7270661 in words is "seven million, two hundred seventy thousand, six hundred sixty-one".