71690324 has 6 divisors (see below), whose sum is σ = 125458074. Its totient is φ = 35845160.

The previous prime is 71690317. The next prime is 71690329. The reversal of 71690324 is 42309617.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 32126224 = 6290^2 + 5668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71690329) 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, 8961287 + ... + 8961294.

It is an arithmetic number, because the mean of its divisors is an integer number (20909679).

Almost surely, 2^71690324 is an apocalyptic number.

It is an amenable number.

71690324 is a deficient number, since it is larger than the sum of its proper divisors (53767750).

71690324 is a wasteful number, since it uses less digits than its factorization.

71690324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17922585 (or 17922583 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 71690324 is about 8467.0138773950. The cubic root of 71690324 is about 415.4194703861.

The spelling of 71690324 in words is "seventy-one million, six hundred ninety thousand, three hundred twenty-four".