71898741 has 6 divisors (see below), whose sum is σ = 103853750. Its totient is φ = 47932488.

The previous prime is 71898737. The next prime is 71898779. The reversal of 71898741 is 14789817.

It can be written as a sum of positive squares in only one way, i.e., 53802225 + 18096516 = 7335^2 + 4254^2 .

It is not a de Polignac number, because 71898741 - 2² = 71898737 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 (71898731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3994366 + ... + 3994383.

Almost surely, 2^71898741 is an apocalyptic number.

It is an amenable number.

71898741 is a deficient number, since it is larger than the sum of its proper divisors (31955009).

71898741 is a wasteful number, since it uses less digits than its factorization.

71898741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988755 (or 7988752 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 71898741 is about 8479.3125310959. The cubic root of 71898741 is about 415.8216479203.

The spelling of 71898741 in words is "seventy-one million, eight hundred ninety-eight thousand, seven hundred forty-one".