83670212 has 6 divisors (see below), whose sum is σ = 146422878. Its totient is φ = 41835104.

The previous prime is 83670211. The next prime is 83670227. The reversal of 83670212 is 21207638.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79852096 + 3818116 = 8936^2 + 1954^2 .

It is a super-2 number, since 2×83670212² = 14001408752249888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83670211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10458773 + ... + 10458780.

It is an arithmetic number, because the mean of its divisors is an integer number (24403813).

Almost surely, 2^83670212 is an apocalyptic number.

It is an amenable number.

83670212 is a deficient number, since it is larger than the sum of its proper divisors (62752666).

83670212 is a wasteful number, since it uses less digits than its factorization.

83670212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20917557 (or 20917555 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 83670212 is about 9147.1422859820. The cubic root of 83670212 is about 437.3780222671.

The spelling of 83670212 in words is "eighty-three million, six hundred seventy thousand, two hundred twelve".