7264213885 has 8 divisors (see below), whose sum is σ = 8952653016. Its totient is φ = 5654306880.

The previous prime is 7264213877. The next prime is 7264213889. The reversal of 7264213885 is 5883124627.

It can be written as a sum of positive squares in 4 ways, for example, as 1741643289 + 5522570596 = 41733^2 + 74314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7264213885 - 2³ = 7264213877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7264213889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19632826 + ... + 19633195.

It is an arithmetic number, because the mean of its divisors is an integer number (1119081627).

Almost surely, 2^7264213885 is an apocalyptic number.

It is an amenable number.

7264213885 is a deficient number, since it is larger than the sum of its proper divisors (1688439131).

7264213885 is a wasteful number, since it uses less digits than its factorization.

7264213885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39266063.

The product of its digits is 645120, while the sum is 46.

The square root of 7264213885 is about 85230.3577664672. The cubic root of 7264213885 is about 1936.7023267087.

The spelling of 7264213885 in words is "seven billion, two hundred sixty-four million, two hundred thirteen thousand, eight hundred eighty-five".