61636242 has 8 divisors (see below), whose sum is σ = 123272496. Its totient is φ = 20545412.

The previous prime is 61636241. The next prime is 61636249. The reversal of 61636242 is 24263616.

It is a sphenic number, since it is the product of 3 distinct primes.

61636242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (61636241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5136348 + ... + 5136359.

It is an arithmetic number, because the mean of its divisors is an integer number (15409062).

Almost surely, 2^61636242 is an apocalyptic number.

61636242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61636242 is a wasteful number, since it uses less digits than its factorization.

61636242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10272712.

The product of its digits is 10368, while the sum is 30.

The square root of 61636242 is about 7850.8752378318. The cubic root of 61636242 is about 395.0136020526.

Adding to 61636242 its reverse (24263616), we get a palindrome (85899858).

The spelling of 61636242 in words is "sixty-one million, six hundred thirty-six thousand, two hundred forty-two".