1000000071 has 24 divisors (see below), whose sum is σ = 1653525120. Its totient is φ = 570483216.

The previous prime is 1000000033. The next prime is 1000000087. The reversal of 1000000071 is 1700000001.

It is not a de Polignac number, because 1000000071 - 2⁶ = 1000000007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000021) 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, 26176 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (68896880).

Almost surely, 2^1000000071 is an apocalyptic number.

1000000071 is a deficient number, since it is larger than the sum of its proper divisors (653525049).

1000000071 is a wasteful number, since it uses less digits than its factorization.

1000000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26275 (or 26272 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 9.

The square root of 1000000071 is about 31622.7777242923. Note that the first 4 decimals coincide. The cubic root of 1000000071 is about 1000.0000236667. Note that the first 4 decimals are identical.

Adding to 1000000071 its reverse (1700000001), we get a palindrome (2700000072).

The spelling of 1000000071 in words is "one billion, seventy-one", and thus it is an aban number and an uban number.