71440606 has 4 divisors (see below), whose sum is σ = 107160912. Its totient is φ = 35720302.

The previous prime is 71440571. The next prime is 71440609. The reversal of 71440606 is 60604417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60604417 = 139 ⋅436003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440609) 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, 17860150 + ... + 17860153.

It is an arithmetic number, because the mean of its divisors is an integer number (26790228).

Almost surely, 2^71440606 is an apocalyptic number.

71440606 is a deficient number, since it is larger than the sum of its proper divisors (35720306).

71440606 is a wasteful number, since it uses less digits than its factorization.

71440606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35720305.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 71440606 is about 8452.2544921459. The cubic root of 71440606 is about 414.9365674568.

The spelling of 71440606 in words is "seventy-one million, four hundred forty thousand, six hundred six".