61307347 has 4 divisors (see below), whose sum is σ = 61325776. Its totient is φ = 61288920.

The previous prime is 61307339. The next prime is 61307353. The reversal of 61307347 is 74370316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61307347 - 2³ = 61307339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61307327) 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 3 ways as a sum of consecutive naturals, for example, 2679 + ... + 11392.

It is an arithmetic number, because the mean of its divisors is an integer number (15331444).

Almost surely, 2^61307347 is an apocalyptic number.

61307347 is a deficient number, since it is larger than the sum of its proper divisors (18429).

61307347 is a wasteful number, since it uses less digits than its factorization.

61307347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 61307347 is about 7829.9008295125. The cubic root of 61307347 is about 394.3097425183.

The spelling of 61307347 in words is "sixty-one million, three hundred seven thousand, three hundred forty-seven".