71979017 has 8 divisors (see below), whose sum is σ = 79405920. Its totient is φ = 64699360.

The previous prime is 71979013. The next prime is 71979031. The reversal of 71979017 is 71097917.

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

It is not a de Polignac number, because 71979017 - 2² = 71979013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71979013) 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, 35783 + ... + 37740.

It is an arithmetic number, because the mean of its divisors is an integer number (9925740).

Almost surely, 2^71979017 is an apocalyptic number.

It is an amenable number.

71979017 is a deficient number, since it is larger than the sum of its proper divisors (7426903).

71979017 is a wasteful number, since it uses less digits than its factorization.

71979017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73623.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 71979017 is about 8484.0448490092. The cubic root of 71979017 is about 415.9763473516.

The spelling of 71979017 in words is "seventy-one million, nine hundred seventy-nine thousand, seventeen".