71725979 has 8 divisors (see below), whose sum is σ = 78397200. Its totient is φ = 65219616.

The previous prime is 71725957. The next prime is 71725981. The reversal of 71725979 is 97952717.

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 71725979 - 2¹⁶ = 71660443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71725079) 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, 40304 + ... + 42045.

It is an arithmetic number, because the mean of its divisors is an integer number (9799650).

Almost surely, 2^71725979 is an apocalyptic number.

71725979 is a deficient number, since it is larger than the sum of its proper divisors (6671221).

71725979 is a wasteful number, since it uses less digits than its factorization.

71725979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82429.

The product of its digits is 277830, while the sum is 47.

The square root of 71725979 is about 8469.1191395564. The cubic root of 71725979 is about 415.4883282436.

The spelling of 71725979 in words is "seventy-one million, seven hundred twenty-five thousand, nine hundred seventy-nine".