60766687081 has 3 divisors (see below), whose sum is σ = 60766933591. Its totient is φ = 60766440572.

The previous prime is 60766687031. The next prime is 60766687097. The reversal of 60766687081 is 18078666706.

The square root of 60766687081 is 246509.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6132299481 + 54634387600 = 78309^2 + 233740^2 .

It is not a de Polignac number, because 60766687081 - 2¹¹ = 60766685033 is a prime.

It is a super-2 number, since 2×60766687081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60766687031) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 123255 + ... + 369763.

Almost surely, 2^60766687081 is an apocalyptic number.

60766687081 is the 246509-th square number.

60766687081 is the 123255-th centered octagonal number.

It is an amenable number.

60766687081 is a deficient number, since it is larger than the sum of its proper divisors (246510).

60766687081 is an frugal number, since it uses more digits than its factorization.

60766687081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493018 (or 246509 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 60766687081 in words is "sixty billion, seven hundred sixty-six million, six hundred eighty-seven thousand, eighty-one".