71963969 has 8 divisors (see below), whose sum is σ = 89721408. Its totient is φ = 56075760.

The previous prime is 71963951. The next prime is 71963999. The reversal of 71963969 is 96936917.

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 71963969 - 2¹² = 71959873 is a prime.

It is a super-2 number, since 2×71963969² = 10357625668465922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71963939) 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, 467222 + ... + 467375.

It is an arithmetic number, because the mean of its divisors is an integer number (11215176).

Almost surely, 2^71963969 is an apocalyptic number.

It is an amenable number.

71963969 is a deficient number, since it is larger than the sum of its proper divisors (17757439).

71963969 is a wasteful number, since it uses less digits than its factorization.

71963969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934615.

The product of its digits is 551124, while the sum is 50.

The square root of 71963969 is about 8483.1579615141. The cubic root of 71963969 is about 415.9473571977.

The spelling of 71963969 in words is "seventy-one million, nine hundred sixty-three thousand, nine hundred sixty-nine".