1660631607 has 6 divisors (see below), whose sum is σ = 2398690112. Its totient is φ = 1107087732.

The previous prime is 1660631603. The next prime is 1660631617. The reversal of 1660631607 is 7061360661.

1660631607 is a `hidden beast` number, since 16 + 6 + 0 + 6 + 31 + 607 = 666.

It is not a de Polignac number, because 1660631607 - 2² = 1660631603 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 (1660631603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92257303 + ... + 92257320.

Almost surely, 2^1660631607 is an apocalyptic number.

1660631607 is a deficient number, since it is larger than the sum of its proper divisors (738058505).

1660631607 is a wasteful number, since it uses less digits than its factorization.

1660631607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184514629 (or 184514626 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1660631607 is about 40750.8479298284. The cubic root of 1660631607 is about 1184.1982998058.

The spelling of 1660631607 in words is "one billion, six hundred sixty million, six hundred thirty-one thousand, six hundred seven".