71439698 has 16 divisors (see below), whose sum is σ = 118505376. Its totient is φ = 32027040.

The previous prime is 71439653. The next prime is 71439701. The reversal of 71439698 is 89693417.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20636 + ... + 23847.

It is an arithmetic number, because the mean of its divisors is an integer number (7406586).

Almost surely, 2^71439698 is an apocalyptic number.

71439698 is a deficient number, since it is larger than the sum of its proper divisors (47065678).

71439698 is a wasteful number, since it uses less digits than its factorization.

71439698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44569.

The product of its digits is 326592, while the sum is 47.

The square root of 71439698 is about 8452.2007784955. The cubic root of 71439698 is about 414.9348095210.

The spelling of 71439698 in words is "seventy-one million, four hundred thirty-nine thousand, six hundred ninety-eight".