71084664 has 48 divisors (see below), whose sum is σ = 220025520. Its totient is φ = 20309760.

The previous prime is 71084653. The next prime is 71084683. The reversal of 71084664 is 46648017.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70017 + ... + 71024.

It is an arithmetic number, because the mean of its divisors is an integer number (4583865).

Almost surely, 2^71084664 is an apocalyptic number.

It is an amenable number.

71084664 is an abundant number, since it is smaller than the sum of its proper divisors (148940856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71084664 is a wasteful number, since it uses less digits than its factorization.

71084664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141060 (or 141053 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 71084664 is about 8431.1721605006. The cubic root of 71084664 is about 414.2463002649.

The spelling of 71084664 in words is "seventy-one million, eighty-four thousand, six hundred sixty-four".