61864307 has 2 divisors, whose sum is σ = 61864308. Its totient is φ = 61864306.

The previous prime is 61864289. The next prime is 61864331. The reversal of 61864307 is 70346816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61864307 - 2⁸ = 61864051 is a prime.

It is not a weakly prime, because it can be changed into another prime (61864007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30932153 + 30932154.

It is an arithmetic number, because the mean of its divisors is an integer number (30932154).

Almost surely, 2^61864307 is an apocalyptic number.

61864307 is a deficient number, since it is larger than the sum of its proper divisors (1).

61864307 is an equidigital number, since it uses as much as digits as its factorization.

61864307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 61864307 is about 7865.3866402104. The cubic root of 61864307 is about 395.5002091054.

The spelling of 61864307 in words is "sixty-one million, eight hundred sixty-four thousand, three hundred seven".