71000385 has 32 divisors (see below), whose sum is σ = 118444032. Its totient is φ = 36277440.

The previous prime is 71000383. The next prime is 71000399. The reversal of 71000385 is 58300017.

It is not a de Polignac number, because 71000385 - 2¹ = 71000383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71000383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49042 + ... + 50468.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^71000385 is an apocalyptic number.

It is an amenable number.

71000385 is a deficient number, since it is larger than the sum of its proper divisors (47443647).

71000385 is a wasteful number, since it uses less digits than its factorization.

71000385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 71000385 is about 8426.1726186923. The cubic root of 71000385 is about 414.0825233986.

The spelling of 71000385 in words is "seventy-one million, three hundred eighty-five", and thus it is an aban number.