61669339 has 2 divisors, whose sum is σ = 61669340. Its totient is φ = 61669338.

The previous prime is 61669313. The next prime is 61669373. The reversal of 61669339 is 93396616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61669339 - 2²⁵ = 28114907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61669295 and 61669304.

It is not a weakly prime, because it can be changed into another prime (61669939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30834669 + 30834670.

It is an arithmetic number, because the mean of its divisors is an integer number (30834670).

Almost surely, 2^61669339 is an apocalyptic number.

61669339 is a deficient number, since it is larger than the sum of its proper divisors (1).

61669339 is an equidigital number, since it uses as much as digits as its factorization.

61669339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 61669339 is about 7852.9828090987. The cubic root of 61669339 is about 395.0842932854.

The spelling of 61669339 in words is "sixty-one million, six hundred sixty-nine thousand, three hundred thirty-nine".