61642436 has 12 divisors (see below), whose sum is σ = 109240320. Its totient is φ = 30430920.

The previous prime is 61642417. The next prime is 61642447. The reversal of 61642436 is 63424616.

61642436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61642436³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 97220 + ... + 97851.

It is an arithmetic number, because the mean of its divisors is an integer number (9103360).

Almost surely, 2^61642436 is an apocalyptic number.

It is an amenable number.

61642436 is a deficient number, since it is larger than the sum of its proper divisors (47597884).

61642436 is a wasteful number, since it uses less digits than its factorization.

61642436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195154 (or 195152 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 61642436 is about 7851.2697062322. The cubic root of 61642436 is about 395.0268336201.

The spelling of 61642436 in words is "sixty-one million, six hundred forty-two thousand, four hundred thirty-six".