7761030061 has 4 divisors (see below), whose sum is σ = 7888260124. Its totient is φ = 7633800000.

The previous prime is 7761030059. The next prime is 7761030089. The reversal of 7761030061 is 1600301677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1600301677 = 13 ⋅123100129.

It can be written as a sum of positive squares in 2 ways, for example, as 92525161 + 7668504900 = 9619^2 + 87570^2 .

It is a cyclic number.

It is not a de Polignac number, because 7761030061 - 2¹ = 7761030059 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 (7761030161) 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, 63614940 + ... + 63615061.

It is an arithmetic number, because the mean of its divisors is an integer number (1972065031).

Almost surely, 2^7761030061 is an apocalyptic number.

It is an amenable number.

7761030061 is a deficient number, since it is larger than the sum of its proper divisors (127230063).

7761030061 is a wasteful number, since it uses less digits than its factorization.

7761030061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127230062.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 7761030061 is about 88096.7085707519. The cubic root of 7761030061 is about 1979.8841939037.

The spelling of 7761030061 in words is "seven billion, seven hundred sixty-one million, thirty thousand, sixty-one".