71640676 has 24 divisors (see below), whose sum is σ = 132491520. Its totient is φ = 33825792.

The previous prime is 71640661. The next prime is 71640689. The reversal of 71640676 is 67604617.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340 + ... + 12196.

It is an arithmetic number, because the mean of its divisors is an integer number (5520480).

Almost surely, 2^71640676 is an apocalyptic number.

It is an amenable number.

71640676 is a deficient number, since it is larger than the sum of its proper divisors (60850844).

71640676 is a wasteful number, since it uses less digits than its factorization.

71640676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963 (or 9961 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 71640676 is about 8464.0815213465. The cubic root of 71640676 is about 415.3235508455.

The spelling of 71640676 in words is "seventy-one million, six hundred forty thousand, six hundred seventy-six".