61305713 has 12 divisors (see below), whose sum is σ = 71442432. Its totient is φ = 52453800.

The previous prime is 61305697. The next prime is 61305743. The reversal of 61305713 is 31750316.

It is a happy number.

It is not a de Polignac number, because 61305713 - 2⁴ = 61305697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61305743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52688 + ... + 53838.

It is an arithmetic number, because the mean of its divisors is an integer number (5953536).

Almost surely, 2^61305713 is an apocalyptic number.

It is an amenable number.

61305713 is a deficient number, since it is larger than the sum of its proper divisors (10136719).

61305713 is a wasteful number, since it uses less digits than its factorization.

61305713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 61305713 is about 7829.7964852223. The cubic root of 61305713 is about 394.3062393610.

The spelling of 61305713 in words is "sixty-one million, three hundred five thousand, seven hundred thirteen".