61612099 has 2 divisors, whose sum is σ = 61612100. Its totient is φ = 61612098.

The previous prime is 61612093. The next prime is 61612123. The reversal of 61612099 is 99021616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61612099 is a prime.

It is not a weakly prime, because it can be changed into another prime (61612093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806049 + 30806050.

It is an arithmetic number, because the mean of its divisors is an integer number (30806050).

Almost surely, 2^61612099 is an apocalyptic number.

61612099 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612099 is an equidigital number, since it uses as much as digits as its factorization.

61612099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 61612099 is about 7849.3374879667. The cubic root of 61612099 is about 394.9620195282.

The spelling of 61612099 in words is "sixty-one million, six hundred twelve thousand, ninety-nine".