71689934 has 4 divisors (see below), whose sum is σ = 107534904. Its totient is φ = 35844966.

The previous prime is 71689913. The next prime is 71689951. The reversal of 71689934 is 43998617.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17922482 + ... + 17922485.

It is an arithmetic number, because the mean of its divisors is an integer number (26883726).

Almost surely, 2^71689934 is an apocalyptic number.

71689934 is a deficient number, since it is larger than the sum of its proper divisors (35844970).

71689934 is a wasteful number, since it uses less digits than its factorization.

71689934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35844969.

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

The square root of 71689934 is about 8466.9908468121. The cubic root of 71689934 is about 415.4187170818.

The spelling of 71689934 in words is "seventy-one million, six hundred eighty-nine thousand, nine hundred thirty-four".