7001281061 has 4 divisors (see below), whose sum is σ = 7002971052. Its totient is φ = 6999591072.

The previous prime is 7001281051. The next prime is 7001281093. The reversal of 7001281061 is 1601821007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2919348961 + 4081932100 = 54031^2 + 63890^2 .

It is a cyclic number.

It is not a de Polignac number, because 7001281061 - 2⁶ = 7001280997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7001281061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7001281051) 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, 838766 + ... + 847071.

It is an arithmetic number, because the mean of its divisors is an integer number (1750742763).

Almost surely, 2^7001281061 is an apocalyptic number.

It is an amenable number.

7001281061 is a deficient number, since it is larger than the sum of its proper divisors (1689991).

7001281061 is a wasteful number, since it uses less digits than its factorization.

7001281061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689990.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 7001281061 is about 83673.6581069574. The cubic root of 7001281061 is about 1913.0478700132.

The spelling of 7001281061 in words is "seven billion, one million, two hundred eighty-one thousand, sixty-one".