1000647475 has 6 divisors (see below), whose sum is σ = 1240802900. Its totient is φ = 800517960.

The previous prime is 1000647449. The next prime is 1000647491. The reversal of 1000647475 is 5747460001.

It is a happy number.

It is not a de Polignac number, because 1000647475 - 2¹⁵ = 1000614707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000647475.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 20012925 + ... + 20012974.

Almost surely, 2^1000647475 is an apocalyptic number.

1000647475 is a deficient number, since it is larger than the sum of its proper divisors (240155425).

1000647475 is an equidigital number, since it uses as much as digits as its factorization.

1000647475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40025909 (or 40025904 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1000647475 is about 31633.0124237323. The cubic root of 1000647475 is about 1000.2157784363.

The spelling of 1000647475 in words is "one billion, six hundred forty-seven thousand, four hundred seventy-five".