61047617 has 4 divisors (see below), whose sum is σ = 61072980. Its totient is φ = 61022256.

The previous prime is 61047607. The next prime is 61047619. The reversal of 61047617 is 71674016.

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 45751696 + 15295921 = 6764^2 + 3911^2 .

It is a cyclic number.

It is not a de Polignac number, because 61047617 - 2¹⁶ = 60982081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61047619) 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, 8642 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (15268245).

Almost surely, 2^61047617 is an apocalyptic number.

It is an amenable number.

61047617 is a deficient number, since it is larger than the sum of its proper divisors (25363).

61047617 is a wasteful number, since it uses less digits than its factorization.

61047617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25362.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 61047617 is about 7813.2974473010. The cubic root of 61047617 is about 393.7521201868.

The spelling of 61047617 in words is "sixty-one million, forty-seven thousand, six hundred seventeen".