71670212 has 12 divisors (see below), whose sum is σ = 125528256. Its totient is φ = 35805000.

The previous prime is 71670211. The next prime is 71670217. The reversal of 71670212 is 21207617.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71670211) 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 in 3 ways as a sum of consecutive naturals, for example, 1664 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (10460688).

Almost surely, 2^71670212 is an apocalyptic number.

It is an amenable number.

71670212 is a deficient number, since it is larger than the sum of its proper divisors (53858044).

71670212 is a wasteful number, since it uses less digits than its factorization.

71670212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15058 (or 15056 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 71670212 is about 8465.8261262561. The cubic root of 71670212 is about 415.3806195001.

Adding to 71670212 its reverse (21207617), we get a palindrome (92877829).

The spelling of 71670212 in words is "seventy-one million, six hundred seventy thousand, two hundred twelve".