71881007 has 8 divisors (see below), whose sum is σ = 78481872. Its totient is φ = 65291200.

The previous prime is 71880967. The next prime is 71881021. The reversal of 71881007 is 70018817.

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 71881007 - 2⁶ = 71880943 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 (71881097) 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, 17033 + ... + 20829.

It is an arithmetic number, because the mean of its divisors is an integer number (9810234).

Almost surely, 2^71881007 is an apocalyptic number.

71881007 is a deficient number, since it is larger than the sum of its proper divisors (6600865).

71881007 is a wasteful number, since it uses less digits than its factorization.

71881007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 71881007 is about 8478.2667450370. The cubic root of 71881007 is about 415.7874573008.

The spelling of 71881007 in words is "seventy-one million, eight hundred eighty-one thousand, seven".