660760047 has 12 divisors (see below), whose sum is σ = 954661864. Its totient is φ = 440400240.

The previous prime is 660760027. The next prime is 660760069. The reversal of 660760047 is 740067066.

660760047 is a `hidden beast` number, since 6 + 6 + 0 + 7 + 600 + 47 = 666.

It is not a de Polignac number, because 660760047 - 2¹⁹ = 660235759 is a prime.

It is a super-2 number, since 2×660760047² = 873207679422884418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660759993 and 660760020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660760007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53553 + ... + 64725.

Almost surely, 2^660760047 is an apocalyptic number.

660760047 is a deficient number, since it is larger than the sum of its proper divisors (293901817).

660760047 is a wasteful number, since it uses less digits than its factorization.

With its successor (660760048) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (17747).

660760047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17750 (or 17747 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 660760047 is about 25705.2532957759. The cubic root of 660760047 is about 870.9928538297.

The spelling of 660760047 in words is "six hundred sixty million, seven hundred sixty thousand, forty-seven".