661006027 has 8 divisors (see below), whose sum is σ = 725083632. Its totient is φ = 597592800.

The previous prime is 661006013. The next prime is 661006033. The reversal of 661006027 is 720600166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-661006027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 661005986 and 661006004.

It is not an unprimeable number, because it can be changed into a prime (661006037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164008 + ... + 167989.

It is an arithmetic number, because the mean of its divisors is an integer number (90635454).

Almost surely, 2^661006027 is an apocalyptic number.

661006027 is a deficient number, since it is larger than the sum of its proper divisors (64077605).

661006027 is a wasteful number, since it uses less digits than its factorization.

661006027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332189.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 661006027 is about 25710.0374756631. The cubic root of 661006027 is about 871.1009214219.

It can be divided in two parts, 66100 and 6027, that added together give a palindrome (72127).

The spelling of 661006027 in words is "six hundred sixty-one million, six thousand, twenty-seven".