71976999 has 8 divisors (see below), whose sum is σ = 96077440. Its totient is φ = 47930616.

The previous prime is 71976977. The next prime is 71977039. The reversal of 71976999 is 99967917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71976999 - 2⁵ = 71976967 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 (71976299) 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, 10297 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (12009680).

Almost surely, 2^71976999 is an apocalyptic number.

71976999 is a deficient number, since it is larger than the sum of its proper divisors (24100441).

71976999 is a wasteful number, since it uses less digits than its factorization.

71976999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27029.

The product of its digits is 1928934, while the sum is 57.

The square root of 71976999 is about 8483.9259190542. The cubic root of 71976999 is about 415.9724598848.

It can be divided in two parts, 7197 and 6999, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 71976999 in words is "seventy-one million, nine hundred seventy-six thousand, nine hundred ninety-nine".