61104729 has 8 divisors (see below), whose sum is σ = 93112000. Its totient is φ = 34916976.

The previous prime is 61104713. The next prime is 61104731. The reversal of 61104729 is 92740116.

It is a happy number.

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

It is not a de Polignac number, because 61104729 - 2⁴ = 61104713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61104696 and 61104705.

It is not an unprimeable number, because it can be changed into a prime (61104709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454854 + ... + 1454895.

It is an arithmetic number, because the mean of its divisors is an integer number (11639000).

Almost surely, 2^61104729 is an apocalyptic number.

It is an amenable number.

61104729 is a deficient number, since it is larger than the sum of its proper divisors (32007271).

61104729 is a wasteful number, since it uses less digits than its factorization.

61104729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909759.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 61104729 is about 7816.9513878494. The cubic root of 61104729 is about 393.8748711534.

The spelling of 61104729 in words is "sixty-one million, one hundred four thousand, seven hundred twenty-nine".