71651008 has 56 divisors (see below), whose sum is σ = 167060880. Its totient is φ = 30059520.

The previous prime is 71650993. The next prime is 71651009. The reversal of 71651008 is 80015617.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71651009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5238 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (2983230).

Almost surely, 2^71651008 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 71651008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83530440).

71651008 is an abundant number, since it is smaller than the sum of its proper divisors (95409872).

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

71651008 is a wasteful number, since it uses less digits than its factorization.

71651008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865 (or 7855 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 71651008 is about 8464.6918431801. The cubic root of 71651008 is about 415.3435158379.

The spelling of 71651008 in words is "seventy-one million, six hundred fifty-one thousand, eight".