7275866 has 20 divisors (see below), whose sum is σ = 12287562. Its totient is φ = 3212088.

The previous prime is 7275857. The next prime is 7275869. The reversal of 7275866 is 6685727.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6996025 + 279841 = 2645^2 + 529^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7275869) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 316331 + ... + 316353.

Almost surely, 2^7275866 is an apocalyptic number.

7275866 is a deficient number, since it is larger than the sum of its proper divisors (5011696).

7275866 is an frugal number, since it uses more digits than its factorization.

7275866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 38 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 7275866 is about 2697.3813226906. The cubic root of 7275866 is about 193.7737291783.

The spelling of 7275866 in words is "seven million, two hundred seventy-five thousand, eight hundred sixty-six".