61768317 has 24 divisors (see below), whose sum is σ = 93075264. Its totient is φ = 36351744.

The previous prime is 61768313. The next prime is 61768319. The reversal of 61768317 is 71386716.

It is not a de Polignac number, because 61768317 - 2² = 61768313 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61768313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9013 + ... + 14309.

It is an arithmetic number, because the mean of its divisors is an integer number (3878136).

Almost surely, 2^61768317 is an apocalyptic number.

It is an amenable number.

61768317 is a deficient number, since it is larger than the sum of its proper divisors (31306947).

61768317 is a wasteful number, since it uses less digits than its factorization.

61768317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349 (or 5336 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 61768317 is about 7859.2822191343. The cubic root of 61768317 is about 395.2955476501.

The spelling of 61768317 in words is "sixty-one million, seven hundred sixty-eight thousand, three hundred seventeen".