61612212 has 24 divisors (see below), whose sum is σ = 151328800. Its totient is φ = 19456416.

The previous prime is 61612183. The next prime is 61612223. The reversal of 61612212 is 21221616.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 134887 + ... + 135342.

Almost surely, 2^61612212 is an apocalyptic number.

It is an amenable number.

61612212 is an abundant number, since it is smaller than the sum of its proper divisors (89716588).

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

61612212 is a wasteful number, since it uses less digits than its factorization.

61612212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270255 (or 270253 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 61612212 is about 7849.3446860232. The cubic root of 61612212 is about 394.9622609888.

Adding to 61612212 its reverse (21221616), we get a palindrome (82833828).

The spelling of 61612212 in words is "sixty-one million, six hundred twelve thousand, two hundred twelve".