61199998 has 16 divisors (see below), whose sum is σ = 94922784. Its totient is φ = 29570400.

The previous prime is 61199993. The next prime is 61200023. The reversal of 61199998 is 89999116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61199993) 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, 8436 + ... + 13912.

It is an arithmetic number, because the mean of its divisors is an integer number (5932674).

Almost surely, 2^61199998 is an apocalyptic number.

61199998 is a deficient number, since it is larger than the sum of its proper divisors (33722786).

61199998 is a wasteful number, since it uses less digits than its factorization.

61199998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667.

The product of its digits is 314928, while the sum is 52.

The square root of 61199998 is about 7823.0427584157. The cubic root of 61199998 is about 394.0794629595.

The spelling of 61199998 in words is "sixty-one million, one hundred ninety-nine thousand, nine hundred ninety-eight".