71887806 has 24 divisors (see below), whose sum is σ = 155983464. Its totient is φ = 23927760.

The previous prime is 71887771. The next prime is 71887807. The reversal of 71887806 is 60878817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71887807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11841 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (6499311).

Almost surely, 2^71887806 is an apocalyptic number.

71887806 is an abundant number, since it is smaller than the sum of its proper divisors (84095658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71887806 is a wasteful number, since it uses less digits than its factorization.

71887806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816 (or 5813 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 71887806 is about 8478.6677019447. The cubic root of 71887806 is about 415.8005662333.

The spelling of 71887806 in words is "seventy-one million, eight hundred eighty-seven thousand, eight hundred six".