71966977 has 8 divisors (see below), whose sum is σ = 76126464. Its totient is φ = 67893408.

The previous prime is 71966929. The next prime is 71967017. The reversal of 71966977 is 77966917.

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 71966977 - 2²³ = 63578369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71966177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19753 + ... + 23110.

It is an arithmetic number, because the mean of its divisors is an integer number (9515808).

Almost surely, 2^71966977 is an apocalyptic number.

It is an amenable number.

71966977 is a deficient number, since it is larger than the sum of its proper divisors (4159487).

71966977 is a wasteful number, since it uses less digits than its factorization.

71966977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42959.

The product of its digits is 1000188, while the sum is 52.

The square root of 71966977 is about 8483.3352521281. The cubic root of 71966977 is about 415.9531524692.

The spelling of 71966977 in words is "seventy-one million, nine hundred sixty-six thousand, nine hundred seventy-seven".