720101611 has 2 divisors, whose sum is σ = 720101612. Its totient is φ = 720101610.

The previous prime is 720101587. The next prime is 720101621. The reversal of 720101611 is 116101027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720101611 - 2⁵ = 720101579 is a prime.

It is not a weakly prime, because it can be changed into another prime (720101621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360050805 + 360050806.

It is an arithmetic number, because the mean of its divisors is an integer number (360050806).

Almost surely, 2^720101611 is an apocalyptic number.

720101611 is a deficient number, since it is larger than the sum of its proper divisors (1).

720101611 is an equidigital number, since it uses as much as digits as its factorization.

720101611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 720101611 is about 26834.7090723935. The cubic root of 720101611 is about 896.3231102928.

Adding to 720101611 its reverse (116101027), we get a palindrome (836202638).

It can be divided in two parts, 7201016 and 11, that added together give a palindrome (7201027).

The spelling of 720101611 in words is "seven hundred twenty million, one hundred one thousand, six hundred eleven".