61669607 has 2 divisors, whose sum is σ = 61669608. Its totient is φ = 61669606.

The previous prime is 61669589. The next prime is 61669667. The reversal of 61669607 is 70696616.

61669607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61669607 - 2¹⁰ = 61668583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61669667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30834803 + 30834804.

It is an arithmetic number, because the mean of its divisors is an integer number (30834804).

Almost surely, 2^61669607 is an apocalyptic number.

61669607 is a deficient number, since it is larger than the sum of its proper divisors (1).

61669607 is an equidigital number, since it uses as much as digits as its factorization.

61669607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 61669607 is about 7852.9998726601. Note that the first 3 decimals coincide. The cubic root of 61669607 is about 395.0848655981.

The spelling of 61669607 in words is "sixty-one million, six hundred sixty-nine thousand, six hundred seven".