61608101 has 4 divisors (see below), whose sum is σ = 62770572. Its totient is φ = 60445632.

The previous prime is 61608091. The next prime is 61608133. The reversal of 61608101 is 10180616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52548001 + 9060100 = 7249^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 61608101 - 2¹⁸ = 61345957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61608181) 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 3 ways as a sum of consecutive naturals, for example, 581156 + ... + 581261.

It is an arithmetic number, because the mean of its divisors is an integer number (15692643).

Almost surely, 2^61608101 is an apocalyptic number.

It is an amenable number.

61608101 is a deficient number, since it is larger than the sum of its proper divisors (1162471).

61608101 is a wasteful number, since it uses less digits than its factorization.

61608101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162470.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 61608101 is about 7849.0828126603. The cubic root of 61608101 is about 394.9534763344.

Adding to 61608101 its reverse (10180616), we get a palindrome (71788717).

The spelling of 61608101 in words is "sixty-one million, six hundred eight thousand, one hundred one".