71889895 has 16 divisors (see below), whose sum is σ = 107555328. Its totient is φ = 44814240.

The previous prime is 71889893. The next prime is 71889911. The reversal of 71889895 is 59898817.

It is not a de Polignac number, because 71889895 - 2¹ = 71889893 is a prime.

It is a super-2 number, since 2×71889895² = 10336314006222050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889893) 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, 92979 + ... + 93748.

It is an arithmetic number, because the mean of its divisors is an integer number (6722208).

Almost surely, 2^71889895 is an apocalyptic number.

71889895 is a deficient number, since it is larger than the sum of its proper divisors (35665433).

71889895 is a wasteful number, since it uses less digits than its factorization.

71889895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186750.

The product of its digits is 1451520, while the sum is 55.

The square root of 71889895 is about 8478.7908925742. The cubic root of 71889895 is about 415.8045938008.

The spelling of 71889895 in words is "seventy-one million, eight hundred eighty-nine thousand, eight hundred ninety-five".