61306817 has 16 divisors (see below), whose sum is σ = 73977792. Its totient is φ = 50051520.

The previous prime is 61306801. The next prime is 61306831. The reversal of 61306817 is 71860316.

It is a cyclic number.

It is not a de Polignac number, because 61306817 - 2⁴ = 61306801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61306877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (4623612).

Almost surely, 2^61306817 is an apocalyptic number.

It is an amenable number.

61306817 is a deficient number, since it is larger than the sum of its proper divisors (12670975).

61306817 is a wasteful number, since it uses less digits than its factorization.

61306817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11648.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 61306817 is about 7829.8669848216. The cubic root of 61306817 is about 394.3086062501.

The spelling of 61306817 in words is "sixty-one million, three hundred six thousand, eight hundred seventeen".