71872063 has 4 divisors (see below), whose sum is σ = 74350440. Its totient is φ = 69393688.

The previous prime is 71871991. The next prime is 71872069. The reversal of 71872063 is 36027817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36027817 = 7 ⋅5146831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71872063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71872069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239145 + ... + 1239202.

It is an arithmetic number, because the mean of its divisors is an integer number (18587610).

Almost surely, 2^71872063 is an apocalyptic number.

71872063 is a deficient number, since it is larger than the sum of its proper divisors (2478377).

71872063 is a wasteful number, since it uses less digits than its factorization.

71872063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478376.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 71872063 is about 8477.7392623270. The cubic root of 71872063 is about 415.7702114041.

The spelling of 71872063 in words is "seventy-one million, eight hundred seventy-two thousand, sixty-three".