61706212 has 12 divisors (see below), whose sum is σ = 109816560. Its totient is φ = 30330056.

The previous prime is 61706207. The next prime is 61706221. The reversal of 61706212 is 21260716.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130498 + ... + 130969.

It is an arithmetic number, because the mean of its divisors is an integer number (9151380).

Almost surely, 2^61706212 is an apocalyptic number.

It is an amenable number.

61706212 is a deficient number, since it is larger than the sum of its proper divisors (48110348).

61706212 is a wasteful number, since it uses less digits than its factorization.

61706212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261530 (or 261528 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 61706212 is about 7855.3301649262. The cubic root of 61706212 is about 395.1630198232.

Adding to 61706212 its reverse (21260716), we get a palindrome (82966928).

The spelling of 61706212 in words is "sixty-one million, seven hundred six thousand, two hundred twelve".