61975849 has 6 divisors (see below), whose sum is σ = 67110126. Its totient is φ = 57208320.

The previous prime is 61975843. The next prime is 61975889. The reversal of 61975849 is 94857916.

It can be written as a sum of positive squares in 3 ways, for example, as 196249 + 61779600 = 443^2 + 7860^2 .

It is not a de Polignac number, because 61975849 - 2³ = 61975841 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 (61975841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183192 + ... + 183529.

It is an arithmetic number, because the mean of its divisors is an integer number (11185021).

Almost surely, 2^61975849 is an apocalyptic number.

It is an amenable number.

61975849 is a deficient number, since it is larger than the sum of its proper divisors (5134277).

61975849 is a wasteful number, since it uses less digits than its factorization.

61975849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366747 (or 366734 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The square root of 61975849 is about 7872.4741346034. The cubic root of 61975849 is about 395.7377634119.

The spelling of 61975849 in words is "sixty-one million, nine hundred seventy-five thousand, eight hundred forty-nine".