61111098 has 24 divisors (see below), whose sum is σ = 137312448. Its totient is φ = 20370204.

The previous prime is 61111031. The next prime is 61111103. The reversal of 61111098 is 89011116.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62386 + ... + 63357.

It is an arithmetic number, because the mean of its divisors is an integer number (5721352).

Almost surely, 2^61111098 is an apocalyptic number.

61111098 is an abundant number, since it is smaller than the sum of its proper divisors (76201350).

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

61111098 is a wasteful number, since it uses less digits than its factorization.

61111098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125760 (or 125748 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 61111098 is about 7817.3587611162. The cubic root of 61111098 is about 393.8885553202. Note that the first 3 decimals are identical.

The spelling of 61111098 in words is "sixty-one million, one hundred eleven thousand, ninety-eight".