71687652 has 48 divisors (see below), whose sum is σ = 174666240. Its totient is φ = 22855168.

The previous prime is 71687647. The next prime is 71687663. The reversal of 71687652 is 25678617.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38413 + ... + 40235.

It is an arithmetic number, because the mean of its divisors is an integer number (3638880).

Almost surely, 2^71687652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71687652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87333120).

71687652 is an abundant number, since it is smaller than the sum of its proper divisors (102978588).

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

71687652 is a wasteful number, since it uses less digits than its factorization.

71687652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1970 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 71687652 is about 8466.8560871199. The cubic root of 71687652 is about 415.4143092311.

The spelling of 71687652 in words is "seventy-one million, six hundred eighty-seven thousand, six hundred fifty-two".