7072775641 has 4 divisors (see below), whose sum is σ = 7206224292. Its totient is φ = 6939326992.

The previous prime is 7072775623. The next prime is 7072775651. The reversal of 7072775641 is 1465772707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1465772707 = 7 ⋅209396101.

It can be written as a sum of positive squares in 2 ways, for example, as 2003905225 + 5068870416 = 44765^2 + 71196^2 .

It is a cyclic number.

It is not a de Polignac number, because 7072775641 - 2⁷ = 7072775513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7072775591 and 7072775600.

It is not an unprimeable number, because it can be changed into a prime (7072775651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66724246 + ... + 66724351.

It is an arithmetic number, because the mean of its divisors is an integer number (1801556073).

Almost surely, 2^7072775641 is an apocalyptic number.

It is an amenable number.

7072775641 is a deficient number, since it is larger than the sum of its proper divisors (133448651).

7072775641 is a wasteful number, since it uses less digits than its factorization.

7072775641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133448650.

The product of its (nonzero) digits is 576240, while the sum is 46.

The square root of 7072775641 is about 84099.7957250789. The cubic root of 7072775641 is about 1919.5376166106.

The spelling of 7072775641 in words is "seven billion, seventy-two million, seven hundred seventy-five thousand, six hundred forty-one".