71601340 has 12 divisors (see below), whose sum is σ = 150362856. Its totient is φ = 28640528.

The previous prime is 71601281. The next prime is 71601347. The reversal of 71601340 is 4310617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71601347) 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 3 ways as a sum of consecutive naturals, for example, 1790014 + ... + 1790053.

It is an arithmetic number, because the mean of its divisors is an integer number (12530238).

Almost surely, 2^71601340 is an apocalyptic number.

It is an amenable number.

71601340 is an abundant number, since it is smaller than the sum of its proper divisors (78761516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71601340 is a wasteful number, since it uses less digits than its factorization.

71601340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580076 (or 3580074 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 71601340 is about 8461.7575006614. The cubic root of 71601340 is about 415.2475225372.

Adding to 71601340 its reverse (4310617), we get a palindrome (75911957).

The spelling of 71601340 in words is "seventy-one million, six hundred one thousand, three hundred forty".