7207861 has 2 divisors, whose sum is σ = 7207862. Its totient is φ = 7207860.

The previous prime is 7207831. The next prime is 7207867. The reversal of 7207861 is 1687027.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 78961 = 2670^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 7207861 - 2⁵ = 7207829 is a prime.

It is equal to p₄₈₉₈₂₀ and since 7207861 and 489820 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7207867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3603930 + 3603931.

It is an arithmetic number, because the mean of its divisors is an integer number (3603931).

Almost surely, 2^7207861 is an apocalyptic number.

It is an amenable number.

7207861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7207861 is an equidigital number, since it uses as much as digits as its factorization.

7207861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 7207861 is about 2684.7459842600. The cubic root of 7207861 is about 193.1681264726.

The spelling of 7207861 in words is "seven million, two hundred seven thousand, eight hundred sixty-one".