71980935 has 16 divisors (see below), whose sum is σ = 124029024. Its totient is φ = 35436672.

The previous prime is 71980927. The next prime is 71980957. The reversal of 71980935 is 53908917.

It is a happy number.

It is not a de Polignac number, because 71980935 - 2³ = 71980927 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 184372 + ... + 184761.

It is an arithmetic number, because the mean of its divisors is an integer number (7751814).

Almost surely, 2^71980935 is an apocalyptic number.

71980935 is a deficient number, since it is larger than the sum of its proper divisors (52048089).

71980935 is a wasteful number, since it uses less digits than its factorization.

71980935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369154.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 71980935 is about 8484.1578839623. The cubic root of 71980935 is about 415.9800421114.

The spelling of 71980935 in words is "seventy-one million, nine hundred eighty thousand, nine hundred thirty-five".