71937081 has 48 divisors (see below), whose sum is σ = 117711360. Its totient is φ = 42094080.

The previous prime is 71937079. The next prime is 71937101. The reversal of 71937081 is 18073917.

It is not a de Polignac number, because 71937081 - 2¹ = 71937079 is a prime.

It is a super-2 number, since 2×71937081² = 10349887245601122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71937181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137286 + ... + 137808.

It is an arithmetic number, because the mean of its divisors is an integer number (2452320).

Almost surely, 2^71937081 is an apocalyptic number.

It is an amenable number.

71937081 is a deficient number, since it is larger than the sum of its proper divisors (45774279).

71937081 is a wasteful number, since it uses less digits than its factorization.

71937081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 71937081 is about 8481.5730262729. The cubic root of 71937081 is about 415.8955470771.

The spelling of 71937081 in words is "seventy-one million, nine hundred thirty-seven thousand, eighty-one".