61329109 has 8 divisors (see below), whose sum is σ = 65204352. Its totient is φ = 57554640.

The previous prime is 61329077. The next prime is 61329133. The reversal of 61329109 is 90192316.

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 61329109 - 2⁵ = 61329077 is a prime.

It is a super-2 number, since 2×61329109² = 7522519221467762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61329139) 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, 23937 + ... + 26374.

It is an arithmetic number, because the mean of its divisors is an integer number (8150544).

Almost surely, 2^61329109 is an apocalyptic number.

It is an amenable number.

61329109 is a deficient number, since it is larger than the sum of its proper divisors (3875243).

61329109 is a wasteful number, since it uses less digits than its factorization.

61329109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50387.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 61329109 is about 7831.2903789861. The cubic root of 61329109 is about 394.3563924655.

The spelling of 61329109 in words is "sixty-one million, three hundred twenty-nine thousand, one hundred nine".