60661047 has 4 divisors (see below), whose sum is σ = 80881400. Its totient is φ = 40440696.

The previous prime is 60661037. The next prime is 60661087. The reversal of 60661047 is 74016606.

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

It is not a de Polignac number, because 60661047 - 2¹⁰ = 60660023 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 (60661037) 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 in 3 ways as a sum of consecutive naturals, for example, 10110172 + ... + 10110177.

It is an arithmetic number, because the mean of its divisors is an integer number (20220350).

Almost surely, 2^60661047 is an apocalyptic number.

60661047 is a deficient number, since it is larger than the sum of its proper divisors (20220353).

60661047 is a wasteful number, since it uses less digits than its factorization.

60661047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220352.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 60661047 is about 7788.5202060468. The cubic root of 60661047 is about 392.9192447815.

The spelling of 60661047 in words is "sixty million, six hundred sixty-one thousand, forty-seven".