71650940 has 12 divisors (see below), whose sum is σ = 150467016. Its totient is φ = 28660368.

The previous prime is 71650921. The next prime is 71650991. The reversal of 71650940 is 4905617.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71650897 and 71650906.

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 3 ways as a sum of consecutive naturals, for example, 1791254 + ... + 1791293.

It is an arithmetic number, because the mean of its divisors is an integer number (12538918).

Almost surely, 2^71650940 is an apocalyptic number.

It is an amenable number.

71650940 is an abundant number, since it is smaller than the sum of its proper divisors (78816076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71650940 is a wasteful number, since it uses less digits than its factorization.

71650940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582556 (or 3582554 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 71650940 is about 8464.6878264943. The cubic root of 71650940 is about 415.3433844447.

The spelling of 71650940 in words is "seventy-one million, six hundred fifty thousand, nine hundred forty".