61363636 has 6 divisors (see below), whose sum is σ = 107386370. Its totient is φ = 30681816.

The previous prime is 61363613. The next prime is 61363637. The reversal of 61363636 is 63636316.

61363636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 9610000 = 7194^2 + 3100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670451 + ... + 7670458.

Almost surely, 2^61363636 is an apocalyptic number.

It is an amenable number.

61363636 is a deficient number, since it is larger than the sum of its proper divisors (46022734).

61363636 is a wasteful number, since it uses less digits than its factorization.

61363636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340913 (or 15340911 counting only the distinct ones).

The product of its digits is 34992, while the sum is 34.

The square root of 61363636 is about 7833.4944947960. The cubic root of 61363636 is about 394.4303833703.

The spelling of 61363636 in words is "sixty-one million, three hundred sixty-three thousand, six hundred thirty-six".