61038636 has 36 divisors (see below), whose sum is σ = 151077528. Its totient is φ = 19114368.

The previous prime is 61038599. The next prime is 61038671. The reversal of 61038636 is 63683016.

It is a junction number, because it is equal to n+sod(n) for n = 61038597 and 61038606.

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 11 ways as a sum of consecutive naturals, for example, 111315 + ... + 111861.

It is an arithmetic number, because the mean of its divisors is an integer number (4196598).

Almost surely, 2^61038636 is an apocalyptic number.

It is an amenable number.

61038636 is an abundant number, since it is smaller than the sum of its proper divisors (90038892).

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

61038636 is a wasteful number, since it uses less digits than its factorization.

61038636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 61038636 is about 7812.7227008259. The cubic root of 61038636 is about 393.7328103355.

The spelling of 61038636 in words is "sixty-one million, thirty-eight thousand, six hundred thirty-six".