61098791 has 8 divisors (see below), whose sum is σ = 66242400. Its totient is φ = 56018592.

The previous prime is 61098781. The next prime is 61098797. The reversal of 61098791 is 19789016.

It is a happy number.

61098791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61098791 - 2¹⁴ = 61082407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61098797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13835 + ... + 17708.

It is an arithmetic number, because the mean of its divisors is an integer number (8280300).

Almost surely, 2^61098791 is an apocalyptic number.

61098791 is a deficient number, since it is larger than the sum of its proper divisors (5143609).

61098791 is a wasteful number, since it uses less digits than its factorization.

61098791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31705.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 61098791 is about 7816.5715630320. The cubic root of 61098791 is about 393.8621121587.

The spelling of 61098791 in words is "sixty-one million, ninety-eight thousand, seven hundred ninety-one".