61135612 has 12 divisors (see below), whose sum is σ = 107144856. Its totient is φ = 30522800.

The previous prime is 61135589. The next prime is 61135631. The reversal of 61135612 is 21653116.

It is a super-2 number, since 2×61135612² = 7475126109229088, which contains 22 as substring.

It is a congruent number.

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, 8098 + ... + 13705.

It is an arithmetic number, because the mean of its divisors is an integer number (8928738).

Almost surely, 2^61135612 is an apocalyptic number.

It is an amenable number.

61135612 is a deficient number, since it is larger than the sum of its proper divisors (46009244).

61135612 is a wasteful number, since it uses less digits than its factorization.

61135612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22508 (or 22506 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 61135612 is about 7818.9265247859. The cubic root of 61135612 is about 393.9412162036.

Adding to 61135612 its reverse (21653116), we get a palindrome (82788728).

The spelling of 61135612 in words is "sixty-one million, one hundred thirty-five thousand, six hundred twelve".