7421726065 has 16 divisors (see below), whose sum is σ = 9598771728. Its totient is φ = 5476306176.

The previous prime is 7421726029. The next prime is 7421726093. The reversal of 7421726065 is 5606271247.

It can be written as a sum of positive squares in 8 ways, for example, as 334780209 + 7086945856 = 18297^2 + 84184^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421726065 - 2¹³ = 7421717873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38299 + ... + 127711.

It is an arithmetic number, because the mean of its divisors is an integer number (599923233).

Almost surely, 2^7421726065 is an apocalyptic number.

It is an amenable number.

7421726065 is a deficient number, since it is larger than the sum of its proper divisors (2177045663).

7421726065 is a wasteful number, since it uses less digits than its factorization.

7421726065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90708.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 7421726065 is about 86149.4403057849. The cubic root of 7421726065 is about 1950.6003906238.

The spelling of 7421726065 in words is "seven billion, four hundred twenty-one million, seven hundred twenty-six thousand, sixty-five".