61308753 has 32 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 36226560.

The previous prime is 61308679. The next prime is 61308761. The reversal of 61308753 is 35780316.

It is a happy number.

It is not a de Polignac number, because 61308753 - 2⁹ = 61308241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (61308773) 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 31 ways as a sum of consecutive naturals, for example, 342418 + ... + 342596.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^61308753 is an apocalyptic number.

It is an amenable number.

61308753 is a deficient number, since it is larger than the sum of its proper divisors (30137007).

61308753 is a wasteful number, since it uses less digits than its factorization.

61308753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 61308753 is about 7829.9906130212. The cubic root of 61308753 is about 394.3127568131.

The spelling of 61308753 in words is "sixty-one million, three hundred eight thousand, seven hundred fifty-three".