71732737 has 2 divisors, whose sum is σ = 71732738. Its totient is φ = 71732736.

The previous prime is 71732723. The next prime is 71732753. The reversal of 71732737 is 73723717.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 23970816 = 6911^2 + 4896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71732737 is a prime.

It is a super-2 number, since 2×71732737² = 10291171115022338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71732696 and 71732705.

It is not a weakly prime, because it can be changed into another prime (71733737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35866368 + 35866369.

It is an arithmetic number, because the mean of its divisors is an integer number (35866369).

Almost surely, 2^71732737 is an apocalyptic number.

It is an amenable number.

71732737 is a deficient number, since it is larger than the sum of its proper divisors (1).

71732737 is an equidigital number, since it uses as much as digits as its factorization.

71732737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43218, while the sum is 37.

The square root of 71732737 is about 8469.5181090780. The cubic root of 71732737 is about 415.5013768953.

The spelling of 71732737 in words is "seventy-one million, seven hundred thirty-two thousand, seven hundred thirty-seven".