7260017821 has 12 divisors (see below), whose sum is σ = 8458179840. Its totient is φ = 6213401880.

The previous prime is 7260017801. The next prime is 7260017837. The reversal of 7260017821 is 1287100627.

It is a happy number.

It is not a de Polignac number, because 7260017821 - 2⁷ = 7260017693 is a prime.

It is a super-2 number, since 2×7260017821² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7260017801) 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 in 11 ways as a sum of consecutive naturals, for example, 80125 + ... + 144706.

It is an arithmetic number, because the mean of its divisors is an integer number (704848320).

Almost surely, 2^7260017821 is an apocalyptic number.

It is an amenable number.

7260017821 is a deficient number, since it is larger than the sum of its proper divisors (1198162019).

7260017821 is a wasteful number, since it uses less digits than its factorization.

7260017821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225504 (or 225497 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 7260017821 is about 85205.7381929175. The cubic root of 7260017821 is about 1936.3293525524.

The spelling of 7260017821 in words is "seven billion, two hundred sixty million, seventeen thousand, eight hundred twenty-one".