61606599 has 4 divisors (see below), whose sum is σ = 82142136. Its totient is φ = 41071064.

The previous prime is 61606547. The next prime is 61606631. The reversal of 61606599 is 99560616.

61606599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61606599 - 2⁷ = 61606471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61606599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606529) 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 3 ways as a sum of consecutive naturals, for example, 10267764 + ... + 10267769.

It is an arithmetic number, because the mean of its divisors is an integer number (20535534).

Almost surely, 2^61606599 is an apocalyptic number.

61606599 is a deficient number, since it is larger than the sum of its proper divisors (20535537).

61606599 is a wasteful number, since it uses less digits than its factorization.

61606599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20535536.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 61606599 is about 7848.9871321082. The cubic root of 61606599 is about 394.9502666648.

The spelling of 61606599 in words is "sixty-one million, six hundred six thousand, five hundred ninety-nine".