71969201 has 2 divisors, whose sum is σ = 71969202. Its totient is φ = 71969200.

The previous prime is 71969179. The next prime is 71969243. The reversal of 71969201 is 10296917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70576801 + 1392400 = 8401^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 71969201 - 2⁶ = 71969137 is a prime.

It is not a weakly prime, because it can be changed into another prime (71969291) 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 as a sum of consecutive naturals, namely, 35984600 + 35984601.

It is an arithmetic number, because the mean of its divisors is an integer number (35984601).

Almost surely, 2^71969201 is an apocalyptic number.

It is an amenable number.

71969201 is a deficient number, since it is larger than the sum of its proper divisors (1).

71969201 is an equidigital number, since it uses as much as digits as its factorization.

71969201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 71969201 is about 8483.4663316359. The cubic root of 71969201 is about 415.9574371672.

The spelling of 71969201 in words is "seventy-one million, nine hundred sixty-nine thousand, two hundred one".