71906879 has 16 divisors (see below), whose sum is σ = 81502080. Its totient is φ = 62868960.

The previous prime is 71906839. The next prime is 71906881. The reversal of 71906879 is 97860917.

It is not a de Polignac number, because 71906879 - 2²⁰ = 70858303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71906819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30557 + ... + 32825.

It is an arithmetic number, because the mean of its divisors is an integer number (5093880).

Almost surely, 2^71906879 is an apocalyptic number.

71906879 is a deficient number, since it is larger than the sum of its proper divisors (9595201).

71906879 is a wasteful number, since it uses less digits than its factorization.

71906879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 71906879 is about 8479.7923913266. The cubic root of 71906879 is about 415.8373358579.

The spelling of 71906879 in words is "seventy-one million, nine hundred six thousand, eight hundred seventy-nine".