71964771 has 4 divisors (see below), whose sum is σ = 95953032. Its totient is φ = 47976512.

The previous prime is 71964749. The next prime is 71964773. The reversal of 71964771 is 17746917.

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 71964771 - 2⁹ = 71964259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71964773) 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, 11994126 + ... + 11994131.

It is an arithmetic number, because the mean of its divisors is an integer number (23988258).

Almost surely, 2^71964771 is an apocalyptic number.

71964771 is a deficient number, since it is larger than the sum of its proper divisors (23988261).

71964771 is a wasteful number, since it uses less digits than its factorization.

71964771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23988260.

The product of its digits is 74088, while the sum is 42.

The square root of 71964771 is about 8483.2052315148. The cubic root of 71964771 is about 415.9489023623.

The spelling of 71964771 in words is "seventy-one million, nine hundred sixty-four thousand, seven hundred seventy-one".