61865267 has 2 divisors, whose sum is σ = 61865268. Its totient is φ = 61865266.

The previous prime is 61865249. The next prime is 61865291. The reversal of 61865267 is 76256816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61865267 - 2⁶ = 61865203 is a prime.

It is a super-2 number, since 2×61865267² = 7654622521962578, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61865467) 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, 30932633 + 30932634.

It is an arithmetic number, because the mean of its divisors is an integer number (30932634).

Almost surely, 2^61865267 is an apocalyptic number.

61865267 is a deficient number, since it is larger than the sum of its proper divisors (1).

61865267 is an equidigital number, since it uses as much as digits as its factorization.

61865267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 61865267 is about 7865.4476668528. The cubic root of 61865267 is about 395.5022548636.

The spelling of 61865267 in words is "sixty-one million, eight hundred sixty-five thousand, two hundred sixty-seven".