71887601 has 2 divisors, whose sum is σ = 71887602. Its totient is φ = 71887600.

The previous prime is 71887591. The next prime is 71887609. The reversal of 71887601 is 10678817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 3841600 = 8249^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 71887601 - 2⁶ = 71887537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71887609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35943800 + 35943801.

It is an arithmetic number, because the mean of its divisors is an integer number (35943801).

Almost surely, 2^71887601 is an apocalyptic number.

It is an amenable number.

71887601 is a deficient number, since it is larger than the sum of its proper divisors (1).

71887601 is an equidigital number, since it uses as much as digits as its factorization.

71887601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 71887601 is about 8478.6556127726. The cubic root of 71887601 is about 415.8001709915.

The spelling of 71887601 in words is "seventy-one million, eight hundred eighty-seven thousand, six hundred one".