71443679 has 4 divisors (see below), whose sum is σ = 72450000. Its totient is φ = 70437360.

The previous prime is 71443657. The next prime is 71443693. The reversal of 71443679 is 97634417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97634417 = 17 ⋅5743201.

It is a cyclic number.

It is not a de Polignac number, because 71443679 - 2¹² = 71439583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71443609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503054 + ... + 503195.

It is an arithmetic number, because the mean of its divisors is an integer number (18112500).

Almost surely, 2^71443679 is an apocalyptic number.

71443679 is a deficient number, since it is larger than the sum of its proper divisors (1006321).

71443679 is a wasteful number, since it uses less digits than its factorization.

71443679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006320.

The product of its digits is 127008, while the sum is 41.

The square root of 71443679 is about 8452.4362760094. The cubic root of 71443679 is about 414.9425168362.

The spelling of 71443679 in words is "seventy-one million, four hundred forty-three thousand, six hundred seventy-nine".