71951612 has 6 divisors (see below), whose sum is σ = 125915328. Its totient is φ = 35975804.

The previous prime is 71951611. The next prime is 71951629. The reversal of 71951612 is 21615917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71951611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8993948 + ... + 8993955.

It is an arithmetic number, because the mean of its divisors is an integer number (20985888).

Almost surely, 2^71951612 is an apocalyptic number.

It is an amenable number.

71951612 is a deficient number, since it is larger than the sum of its proper divisors (53963716).

71951612 is a wasteful number, since it uses less digits than its factorization.

71951612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17987907 (or 17987905 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 71951612 is about 8482.4296047772. The cubic root of 71951612 is about 415.9235482658.

The spelling of 71951612 in words is "seventy-one million, nine hundred fifty-one thousand, six hundred twelve".