71646970 has 8 divisors (see below), whose sum is σ = 128964564. Its totient is φ = 28658784.

The previous prime is 71646943. The next prime is 71646973. The reversal of 71646970 is 7964617.

It can be written as a sum of positive squares in 2 ways, for example, as 65431921 + 6215049 = 8089^2 + 2493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71646973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582339 + ... + 3582358.

Almost surely, 2^71646970 is an apocalyptic number.

71646970 is a deficient number, since it is larger than the sum of its proper divisors (57317594).

71646970 is a wasteful number, since it uses less digits than its factorization.

71646970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164704.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 71646970 is about 8464.4533196185. The cubic root of 71646970 is about 415.3357132558.

The spelling of 71646970 in words is "seventy-one million, six hundred forty-six thousand, nine hundred seventy".