71484985 has 48 divisors (see below), whose sum is σ = 103899600. Its totient is φ = 46886400.

The previous prime is 71484953. The next prime is 71485009. The reversal of 71484985 is 58948417.

It can be written as a sum of positive squares in 8 ways, for example, as 35808256 + 35676729 = 5984^2 + 5973^2 .

It is not a de Polignac number, because 71484985 - 2⁵ = 71484953 is a prime.

It is a super-2 number, since 2×71484985² = 10220206160900450, which contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 479691 + ... + 479839.

It is an arithmetic number, because the mean of its divisors is an integer number (2164575).

Almost surely, 2^71484985 is an apocalyptic number.

It is an amenable number.

71484985 is a deficient number, since it is larger than the sum of its proper divisors (32414615).

71484985 is a wasteful number, since it uses less digits than its factorization.

71484985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 239 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 71484985 is about 8454.8793604640. The cubic root of 71484985 is about 415.0224693887.

The spelling of 71484985 in words is "seventy-one million, four hundred eighty-four thousand, nine hundred eighty-five".