7172621207 has 2 divisors, whose sum is σ = 7172621208. Its totient is φ = 7172621206.

The previous prime is 7172621189. The next prime is 7172621233. The reversal of 7172621207 is 7021262717.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7172621207 is a prime.

It is a super-2 number, since 2×7172621207² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7172621297) 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, 3586310603 + 3586310604.

It is an arithmetic number, because the mean of its divisors is an integer number (3586310604).

Almost surely, 2^7172621207 is an apocalyptic number.

7172621207 is a deficient number, since it is larger than the sum of its proper divisors (1).

7172621207 is an equidigital number, since it uses as much as digits as its factorization.

7172621207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 7172621207 is about 84691.3289953582. The cubic root of 7172621207 is about 1928.5280737529.

The spelling of 7172621207 in words is "seven billion, one hundred seventy-two million, six hundred twenty-one thousand, two hundred seven".