61975743 has 4 divisors (see below), whose sum is σ = 82634328. Its totient is φ = 41317160.

The previous prime is 61975741. The next prime is 61975747. The reversal of 61975743 is 34757916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61975743 - 2¹ = 61975741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61975695 and 61975704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61975741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10329288 + ... + 10329293.

It is an arithmetic number, because the mean of its divisors is an integer number (20658582).

Almost surely, 2^61975743 is an apocalyptic number.

61975743 is a deficient number, since it is larger than the sum of its proper divisors (20658585).

61975743 is a wasteful number, since it uses less digits than its factorization.

61975743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20658584.

The product of its digits is 158760, while the sum is 42.

The square root of 61975743 is about 7872.4674022825. The cubic root of 61975743 is about 395.7375377959.

The spelling of 61975743 in words is "sixty-one million, nine hundred seventy-five thousand, seven hundred forty-three".