71986801 has 4 divisors (see below), whose sum is σ = 75775600. Its totient is φ = 68198004.

The previous prime is 71986741. The next prime is 71986807. The reversal of 71986801 is 10868917.

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 71986801 - 2⁹ = 71986289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71986807) 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, 1894371 + ... + 1894408.

It is an arithmetic number, because the mean of its divisors is an integer number (18943900).

Almost surely, 2^71986801 is an apocalyptic number.

It is an amenable number.

71986801 is a deficient number, since it is larger than the sum of its proper divisors (3788799).

71986801 is a wasteful number, since it uses less digits than its factorization.

71986801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788798.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 71986801 is about 8484.5035800570. The cubic root of 71986801 is about 415.9913417361.

The spelling of 71986801 in words is "seventy-one million, nine hundred eighty-six thousand, eight hundred one".