6166610642 has 4 divisors (see below), whose sum is σ = 9249915966. Its totient is φ = 3083305320.

The previous prime is 6166610629. The next prime is 6166610647. The reversal of 6166610642 is 2460166616.

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

It can be written as a sum of positive squares in only one way, i.e., 4344259921 + 1822350721 = 65911^2 + 42689^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6166610596 and 6166610605.

It is not an unprimeable number, because it can be changed into a prime (6166610647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1541652659 + ... + 1541652662.

Almost surely, 2^6166610642 is an apocalyptic number.

6166610642 is a deficient number, since it is larger than the sum of its proper divisors (3083305324).

6166610642 is a wasteful number, since it uses less digits than its factorization.

6166610642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083305323.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 6166610642 is about 78527.7698779228. The cubic root of 6166610642 is about 1833.7868018178.

The spelling of 6166610642 in words is "six billion, one hundred sixty-six million, six hundred ten thousand, six hundred forty-two".