61222998 has 8 divisors (see below), whose sum is σ = 122446008. Its totient is φ = 20407664.

The previous prime is 61222991. The next prime is 61223009. The reversal of 61222998 is 89922216.

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

61222998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61222991) 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, 5101911 + ... + 5101922.

It is an arithmetic number, because the mean of its divisors is an integer number (15305751).

Almost surely, 2^61222998 is an apocalyptic number.

61222998 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.

61222998 is a wasteful number, since it uses less digits than its factorization.

61222998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203838.

The product of its digits is 31104, while the sum is 39.

The square root of 61222998 is about 7824.5126365800. The cubic root of 61222998 is about 394.1288240310.

The spelling of 61222998 in words is "sixty-one million, two hundred twenty-two thousand, nine hundred ninety-eight".