61811196 has 24 divisors (see below), whose sum is σ = 144690000. Its totient is φ = 20537472.

The previous prime is 61811159. The next prime is 61811219. The reversal of 61811196 is 69111816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4321 + ... + 11928.

It is an arithmetic number, because the mean of its divisors is an integer number (6028750).

Almost surely, 2^61811196 is an apocalyptic number.

It is an amenable number.

61811196 is an abundant number, since it is smaller than the sum of its proper divisors (82878804).

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

61811196 is a wasteful number, since it uses less digits than its factorization.

61811196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16573 (or 16571 counting only the distinct ones).

The product of its digits is 2592, while the sum is 33.

The square root of 61811196 is about 7862.0096667455. The cubic root of 61811196 is about 395.3869966754.

The spelling of 61811196 in words is "sixty-one million, eight hundred eleven thousand, one hundred ninety-six".