61605059 has 8 divisors (see below), whose sum is σ = 66299328. Its totient is φ = 57029760.

The previous prime is 61605031. The next prime is 61605101. The reversal of 61605059 is 95050616.

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

It is a cyclic number.

It is not a de Polignac number, because 61605059 - 2¹² = 61600963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61605559) 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 7 ways as a sum of consecutive naturals, for example, 28667 + ... + 30740.

It is an arithmetic number, because the mean of its divisors is an integer number (8287416).

Almost surely, 2^61605059 is an apocalyptic number.

61605059 is a deficient number, since it is larger than the sum of its proper divisors (4694269).

61605059 is a wasteful number, since it uses less digits than its factorization.

61605059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59485.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 61605059 is about 7848.8890296653. The cubic root of 61605059 is about 394.9469757377.

The spelling of 61605059 in words is "sixty-one million, six hundred five thousand, fifty-nine".