61824091 has 8 divisors (see below), whose sum is σ = 70761440. Its totient is φ = 52913088.

The previous prime is 61824089. The next prime is 61824097. The reversal of 61824091 is 19042816.

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 61824091 - 2¹ = 61824089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61824097) 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 7 ways as a sum of consecutive naturals, for example, 1266 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (8845180).

Almost surely, 2^61824091 is an apocalyptic number.

61824091 is a deficient number, since it is larger than the sum of its proper divisors (8937349).

61824091 is a wasteful number, since it uses less digits than its factorization.

61824091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13173.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 61824091 is about 7862.8297069185. The cubic root of 61824091 is about 395.4144898651.

The spelling of 61824091 in words is "sixty-one million, eight hundred twenty-four thousand, ninety-one".