71612371 has 8 divisors (see below), whose sum is σ = 73160640. Its totient is φ = 70075368.

The previous prime is 71612341. The next prime is 71612377. The reversal of 71612371 is 17321617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71612371 - 2¹⁵ = 71579603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71612377) 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, 10720 + ... + 16066.

It is an arithmetic number, because the mean of its divisors is an integer number (9145080).

Almost surely, 2^71612371 is an apocalyptic number.

71612371 is a deficient number, since it is larger than the sum of its proper divisors (1548269).

71612371 is a wasteful number, since it uses less digits than its factorization.

71612371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633.

The product of its digits is 1764, while the sum is 28.

The square root of 71612371 is about 8462.4092905035. The cubic root of 71612371 is about 415.2688459752.

Adding to 71612371 its reverse (17321617), we get a palindrome (88933988).

The spelling of 71612371 in words is "seventy-one million, six hundred twelve thousand, three hundred seventy-one".