1000661607 has 24 divisors (see below), whose sum is σ = 1635204480. Its totient is φ = 606459960.

The previous prime is 1000661593. The next prime is 1000661609. The reversal of 1000661607 is 7061660001.

It is not a de Polignac number, because 1000661607 - 2¹⁴ = 1000645223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000661609) 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 23 ways as a sum of consecutive naturals, for example, 184507 + ... + 189852.

It is an arithmetic number, because the mean of its divisors is an integer number (68133520).

Almost surely, 2^1000661607 is an apocalyptic number.

1000661607 is a deficient number, since it is larger than the sum of its proper divisors (634542873).

1000661607 is an equidigital number, since it uses as much as digits as its factorization.

1000661607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374385 (or 374373 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1000661607 is about 31633.2357971802. The cubic root of 1000661607 is about 1000.2204870486.

The spelling of 1000661607 in words is "one billion, six hundred sixty-one thousand, six hundred seven".