61863299 has 2 divisors, whose sum is σ = 61863300. Its totient is φ = 61863298.

The previous prime is 61863287. The next prime is 61863331. The reversal of 61863299 is 99236816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61863299 - 2¹⁶ = 61797763 is a prime.

It is not a weakly prime, because it can be changed into another prime (61863199) 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 as a sum of consecutive naturals, namely, 30931649 + 30931650.

It is an arithmetic number, because the mean of its divisors is an integer number (30931650).

Almost surely, 2^61863299 is an apocalyptic number.

61863299 is a deficient number, since it is larger than the sum of its proper divisors (1).

61863299 is an equidigital number, since it uses as much as digits as its factorization.

61863299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 61863299 is about 7865.3225617263. The cubic root of 61863299 is about 395.4980610365.

The spelling of 61863299 in words is "sixty-one million, eight hundred sixty-three thousand, two hundred ninety-nine".