61999323 has 8 divisors (see below), whose sum is σ = 87528528. Its totient is φ = 38901504.

The previous prime is 61999313. The next prime is 61999351. The reversal of 61999323 is 32399916.

It is a happy number.

61999323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61999323 - 2²² = 57805019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61999313) 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 in 7 ways as a sum of consecutive naturals, for example, 607786 + ... + 607887.

It is an arithmetic number, because the mean of its divisors is an integer number (10941066).

Almost surely, 2^61999323 is an apocalyptic number.

61999323 is a deficient number, since it is larger than the sum of its proper divisors (25529205).

61999323 is a wasteful number, since it uses less digits than its factorization.

61999323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215693.

The product of its digits is 78732, while the sum is 42.

The square root of 61999323 is about 7873.9648843515. The cubic root of 61999323 is about 395.7877203754.

The spelling of 61999323 in words is "sixty-one million, nine hundred ninety-nine thousand, three hundred twenty-three".