71869805 has 8 divisors (see below), whose sum is σ = 98564352. Its totient is φ = 49282128.

The previous prime is 71869771. The next prime is 71869807. The reversal of 71869805 is 50896817.

It is a happy number.

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

It is not a de Polignac number, because 71869805 - 2¹² = 71865709 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 (71869807) 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, 1026677 + ... + 1026746.

It is an arithmetic number, because the mean of its divisors is an integer number (12320544).

Almost surely, 2^71869805 is an apocalyptic number.

It is an amenable number.

71869805 is a deficient number, since it is larger than the sum of its proper divisors (26694547).

71869805 is a wasteful number, since it uses less digits than its factorization.

71869805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053435.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 71869805 is about 8477.6060889853. The cubic root of 71869805 is about 415.7658572831.

The spelling of 71869805 in words is "seventy-one million, eight hundred sixty-nine thousand, eight hundred five".