61404222 has 32 divisors (see below), whose sum is σ = 134970624. Its totient is φ = 18468800.

The previous prime is 61404209. The next prime is 61404229. The reversal of 61404222 is 22240416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61404229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5647 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (4217832).

Almost surely, 2^61404222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61404222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67485312).

61404222 is an abundant number, since it is smaller than the sum of its proper divisors (73566402).

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

61404222 is a wasteful number, since it uses less digits than its factorization.

61404222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 61404222 is about 7836.0846090379. The cubic root of 61404222 is about 394.5173231529.

Adding to 61404222 its reverse (22240416), we get a palindrome (83644638).

The spelling of 61404222 in words is "sixty-one million, four hundred four thousand, two hundred twenty-two".