61636012 has 24 divisors (see below), whose sum is σ = 109432400. Its totient is φ = 30373056.

The previous prime is 61636007. The next prime is 61636013. The reversal of 61636012 is 21063616.

It is not an unprimeable number, because it can be changed into a prime (61636013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162439 + ... + 162817.

Almost surely, 2^61636012 is an apocalyptic number.

It is an amenable number.

61636012 is a deficient number, since it is larger than the sum of its proper divisors (47796388).

61636012 is a wasteful number, since it uses less digits than its factorization.

61636012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 61636012 is about 7850.8605897698. The cubic root of 61636012 is about 395.0131107115.

Adding to 61636012 its reverse (21063616), we get a palindrome (82699628).

The spelling of 61636012 in words is "sixty-one million, six hundred thirty-six thousand, twelve".