61475717 has 4 divisors (see below), whose sum is σ = 61579980. Its totient is φ = 61371456.

The previous prime is 61475663. The next prime is 61475719. The reversal of 61475717 is 71757416.

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 41396356 + 20079361 = 6434^2 + 4481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61475717 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 (61475719) 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, 51242 + ... + 52427.

It is an arithmetic number, because the mean of its divisors is an integer number (15394995).

Almost surely, 2^61475717 is an apocalyptic number.

It is an amenable number.

61475717 is a deficient number, since it is larger than the sum of its proper divisors (104263).

61475717 is a wasteful number, since it uses less digits than its factorization.

61475717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104262.

The product of its digits is 41160, while the sum is 38.

The square root of 61475717 is about 7840.6451902889. The cubic root of 61475717 is about 394.6703803592.

The spelling of 61475717 in words is "sixty-one million, four hundred seventy-five thousand, seven hundred seventeen".