71861373 has 12 divisors (see below), whose sum is σ = 103976028. Its totient is φ = 47826240.

The previous prime is 71861371. The next prime is 71861381. The reversal of 71861373 is 37316817.

It can be written as a sum of positive squares in 2 ways, for example, as 23794884 + 48066489 = 4878^2 + 6933^2 .

It is not a de Polignac number, because 71861373 - 2¹ = 71861371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71861371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918 + ... + 12023.

It is an arithmetic number, because the mean of its divisors is an integer number (8664669).

Almost surely, 2^71861373 is an apocalyptic number.

It is an amenable number.

71861373 is a deficient number, since it is larger than the sum of its proper divisors (32114655).

71861373 is a wasteful number, since it uses less digits than its factorization.

71861373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13564 (or 13561 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 71861373 is about 8477.1087641955. The cubic root of 71861373 is about 415.7495969783.

The spelling of 71861373 in words is "seventy-one million, eight hundred sixty-one thousand, three hundred seventy-three".