7061661607 has 24 divisors (see below), whose sum is σ = 9650711952. Its totient is φ = 5079312000.

The previous prime is 7061661601. The next prime is 7061661611.

7061661607 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7061661607 - 2³ = 7061661599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7061661607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7061661601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496894 + ... + 510907.

It is an arithmetic number, because the mean of its divisors is an integer number (402112998).

Almost surely, 2^7061661607 is an apocalyptic number.

7061661607 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7061661607 is a deficient number, since it is larger than the sum of its proper divisors (2589050345).

7061661607 is a wasteful number, since it uses less digits than its factorization.

7061661607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007839 (or 1007832 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7061661607 is about 84033.6932843011. The cubic root of 7061661607 is about 1918.5316470684.

The spelling of 7061661607 in words is "seven billion, sixty-one million, six hundred sixty-one thousand, six hundred seven".