71999201 has 4 divisors (see below), whose sum is σ = 72120000. Its totient is φ = 71878404.

The previous prime is 71999197. The next prime is 71999231. The reversal of 71999201 is 10299917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71999201 - 2² = 71999197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71999231) 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 in 3 ways as a sum of consecutive naturals, for example, 59501 + ... + 60698.

It is an arithmetic number, because the mean of its divisors is an integer number (18030000).

Almost surely, 2^71999201 is an apocalyptic number.

It is an amenable number.

71999201 is a deficient number, since it is larger than the sum of its proper divisors (120799).

71999201 is a wasteful number, since it uses less digits than its factorization.

71999201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120798.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 71999201 is about 8485.2342925814. The cubic root of 71999201 is about 416.0152257279.

The spelling of 71999201 in words is "seventy-one million, nine hundred ninety-nine thousand, two hundred one".