61651117 has 8 divisors (see below), whose sum is σ = 67459392. Its totient is φ = 55876800.

The previous prime is 61651103. The next prime is 61651123. The reversal of 61651117 is 71115616.

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 61651117 - 2¹⁹ = 61126829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651517) 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, 4609 + ... + 12022.

It is an arithmetic number, because the mean of its divisors is an integer number (8432424).

Almost surely, 2^61651117 is an apocalyptic number.

It is an amenable number.

61651117 is a deficient number, since it is larger than the sum of its proper divisors (5808275).

61651117 is a wasteful number, since it uses less digits than its factorization.

61651117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16979.

The product of its digits is 1260, while the sum is 28.

The square root of 61651117 is about 7851.8225272863. The cubic root of 61651117 is about 395.0453764033.

The spelling of 61651117 in words is "sixty-one million, six hundred fifty-one thousand, one hundred seventeen".