61669017 has 12 divisors (see below), whose sum is σ = 89194560. Its totient is φ = 41058648.

The previous prime is 61669007. The next prime is 61669021. The reversal of 61669017 is 71096616.

It is not a de Polignac number, because 61669017 - 2⁴ = 61669001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61669007) 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 in 11 ways as a sum of consecutive naturals, for example, 3468 + ... + 11634.

It is an arithmetic number, because the mean of its divisors is an integer number (7432880).

Almost surely, 2^61669017 is an apocalyptic number.

It is an amenable number.

61669017 is a deficient number, since it is larger than the sum of its proper divisors (27525543).

61669017 is a wasteful number, since it uses less digits than its factorization.

61669017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012 (or 9009 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61669017 is about 7852.9623073080. The cubic root of 61669017 is about 395.0836056537.

The spelling of 61669017 in words is "sixty-one million, six hundred sixty-nine thousand, seventeen".