61608099 has 32 divisors (see below), whose sum is σ = 98565120. Its totient is φ = 33466752.

The previous prime is 61608091. The next prime is 61608133. The reversal of 61608099 is 99080616.

It is not a de Polignac number, because 61608099 - 2³ = 61608091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61608091) 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 31 ways as a sum of consecutive naturals, for example, 110329 + ... + 110885.

It is an arithmetic number, because the mean of its divisors is an integer number (3080160).

Almost surely, 2^61608099 is an apocalyptic number.

61608099 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

61608099 is a deficient number, since it is larger than the sum of its proper divisors (36957021).

61608099 is a wasteful number, since it uses less digits than its factorization.

61608099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 61608099 is about 7849.0826852569. The cubic root of 61608099 is about 394.9534720606.

The spelling of 61608099 in words is "sixty-one million, six hundred eight thousand, ninety-nine".