61822812 has 24 divisors (see below), whose sum is σ = 152739216. Its totient is φ = 19395328.

The previous prime is 61822811. The next prime is 61822823. The reversal of 61822812 is 21822816.

It is a self number, because there is not a number n which added to its sum of digits gives 61822812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61822811) by changing a digit.

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, 151323 + ... + 151730.

It is an arithmetic number, because the mean of its divisors is an integer number (6364134).

Almost surely, 2^61822812 is an apocalyptic number.

It is an amenable number.

61822812 is an abundant number, since it is smaller than the sum of its proper divisors (90916404).

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

61822812 is a wasteful number, since it uses less digits than its factorization.

61822812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303077 (or 303075 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 61822812 is about 7862.7483744553. The cubic root of 61822812 is about 395.4117631038.

The spelling of 61822812 in words is "sixty-one million, eight hundred twenty-two thousand, eight hundred twelve".