61560617 has 4 divisors (see below), whose sum is σ = 61577556. Its totient is φ = 61543680.

The previous prime is 61560599. The next prime is 61560701. The reversal of 61560617 is 71606516.

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 25512601 + 36048016 = 5051^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 61560617 - 2¹⁶ = 61495081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61560217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (15394389).

Almost surely, 2^61560617 is an apocalyptic number.

It is an amenable number.

61560617 is a deficient number, since it is larger than the sum of its proper divisors (16939).

61560617 is a wasteful number, since it uses less digits than its factorization.

61560617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16938.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 61560617 is about 7846.0574175824. The cubic root of 61560617 is about 394.8519810722.

The spelling of 61560617 in words is "sixty-one million, five hundred sixty thousand, six hundred seventeen".