71814401 has 4 divisors (see below), whose sum is σ = 72130992. Its totient is φ = 71497812.

The previous prime is 71814371. The next prime is 71814403. The reversal of 71814401 is 10441817.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10441817 = 661 ⋅15797.

It is a cyclic number.

It is not a de Polignac number, because 71814401 - 2²² = 67620097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71814403) 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 in 3 ways as a sum of consecutive naturals, for example, 157955 + ... + 158408.

It is an arithmetic number, because the mean of its divisors is an integer number (18032748).

Almost surely, 2^71814401 is an apocalyptic number.

It is an amenable number.

71814401 is a deficient number, since it is larger than the sum of its proper divisors (316591).

71814401 is a wasteful number, since it uses less digits than its factorization.

71814401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316590.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 71814401 is about 8474.3377912377. The cubic root of 71814401 is about 415.6589926859.

The spelling of 71814401 in words is "seventy-one million, eight hundred fourteen thousand, four hundred one".