71948951 has 4 divisors (see below), whose sum is σ = 73128504. Its totient is φ = 70769400.

The previous prime is 71948909. The next prime is 71948977. The reversal of 71948951 is 15984917.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71948951 - 2⁶ = 71948887 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 (71948351) 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, 589685 + ... + 589806.

It is an arithmetic number, because the mean of its divisors is an integer number (18282126).

Almost surely, 2^71948951 is an apocalyptic number.

71948951 is a deficient number, since it is larger than the sum of its proper divisors (1179553).

71948951 is a wasteful number, since it uses less digits than its factorization.

71948951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179552.

The product of its digits is 90720, while the sum is 44.

The square root of 71948951 is about 8482.2727496821. The cubic root of 71948951 is about 415.9184208096.

The spelling of 71948951 in words is "seventy-one million, nine hundred forty-eight thousand, nine hundred fifty-one".