1000561071 has 16 divisors (see below), whose sum is σ = 1405289600. Its totient is φ = 631486368.

The previous prime is 1000561069. The next prime is 1000561087. The reversal of 1000561071 is 1701650001.

It is not a de Polignac number, because 1000561071 - 2¹ = 1000561069 is a prime.

It is a super-2 number, since 2×1000561071² = 2002244913601334082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000561021) 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 15 ways as a sum of consecutive naturals, for example, 87345 + ... + 98133.

It is an arithmetic number, because the mean of its divisors is an integer number (87830600).

Almost surely, 2^1000561071 is an apocalyptic number.

1000561071 is a deficient number, since it is larger than the sum of its proper divisors (404728529).

1000561071 is a wasteful number, since it uses less digits than its factorization.

1000561071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12438.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 1000561071 is about 31631.6466691192. The cubic root of 1000561071 is about 1000.1869886997.

The spelling of 1000561071 in words is "one billion, five hundred sixty-one thousand, seventy-one".