71839601 has 2 divisors, whose sum is σ = 71839602. Its totient is φ = 71839600.

The previous prime is 71839591. The next prime is 71839613. The reversal of 71839601 is 10693817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41589601 + 30250000 = 6449^2 + 5500^2 .

It is a cyclic number.

It is not a de Polignac number, because 71839601 - 2¹⁴ = 71823217 is a prime.

It is not a weakly prime, because it can be changed into another prime (71839631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35919800 + 35919801.

It is an arithmetic number, because the mean of its divisors is an integer number (35919801).

Almost surely, 2^71839601 is an apocalyptic number.

It is an amenable number.

71839601 is a deficient number, since it is larger than the sum of its proper divisors (1).

71839601 is an equidigital number, since it uses as much as digits as its factorization.

71839601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 71839601 is about 8475.8245026664. The cubic root of 71839601 is about 415.7076058773.

The spelling of 71839601 in words is "seventy-one million, eight hundred thirty-nine thousand, six hundred one".