720198671 has 2 divisors, whose sum is σ = 720198672. Its totient is φ = 720198670.

The previous prime is 720198649. The next prime is 720198679. The reversal of 720198671 is 176891027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720198671 - 2¹⁸ = 719936527 is a prime.

It is a super-2 number, since 2×720198671² = 1037372251420332482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720198679) 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, 360099335 + 360099336.

It is an arithmetic number, because the mean of its divisors is an integer number (360099336).

Almost surely, 2^720198671 is an apocalyptic number.

720198671 is a deficient number, since it is larger than the sum of its proper divisors (1).

720198671 is an equidigital number, since it uses as much as digits as its factorization.

720198671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 720198671 is about 26836.5174901663. The cubic root of 720198671 is about 896.3633792453.

The spelling of 720198671 in words is "seven hundred twenty million, one hundred ninety-eight thousand, six hundred seventy-one".