71740037 has 6 divisors (see below), whose sum is σ = 73534194. Its totient is φ = 69988640.

The previous prime is 71740021. The next prime is 71740057. The reversal of 71740037 is 73004717.

It can be written as a sum of positive squares in 3 ways, for example, as 1196836 + 70543201 = 1094^2 + 8399^2 .

It is not a de Polignac number, because 71740037 - 2⁴ = 71740021 is a prime.

It is a super-2 number, since 2×71740037² = 10293265817522738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71739991 and 71740009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71740057) 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 5 ways as a sum of consecutive naturals, for example, 19658 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (12255699).

Almost surely, 2^71740037 is an apocalyptic number.

It is an amenable number.

71740037 is a deficient number, since it is larger than the sum of its proper divisors (1794157).

71740037 is an equidigital number, since it uses as much as digits as its factorization.

71740037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42759 (or 42718 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 71740037 is about 8469.9490553368. The cubic root of 71740037 is about 415.5154711443.

The spelling of 71740037 in words is "seventy-one million, seven hundred forty thousand, thirty-seven".