61869829 has 8 divisors (see below), whose sum is σ = 70757120. Its totient is φ = 52994736.

The previous prime is 61869827. The next prime is 61869853. The reversal of 61869829 is 92896816.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61869829 - 2¹ = 61869827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61869827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14827 + ... + 18535.

It is an arithmetic number, because the mean of its divisors is an integer number (8844640).

Almost surely, 2^61869829 is an apocalyptic number.

It is an amenable number.

61869829 is a deficient number, since it is larger than the sum of its proper divisors (8887291).

61869829 is a wasteful number, since it uses less digits than its factorization.

61869829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6099.

The product of its digits is 373248, while the sum is 49.

The square root of 61869829 is about 7865.7376640719. The cubic root of 61869829 is about 395.5119761877.

The spelling of 61869829 in words is "sixty-one million, eight hundred sixty-nine thousand, eight hundred twenty-nine".