61607743 has 4 divisors (see below), whose sum is σ = 62617768. Its totient is φ = 60597720.

The previous prime is 61607737. The next prime is 61607753. The reversal of 61607743 is 34770616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61607743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61607699 and 61607708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61607753) 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, 504921 + ... + 505042.

It is an arithmetic number, because the mean of its divisors is an integer number (15654442).

Almost surely, 2^61607743 is an apocalyptic number.

61607743 is a deficient number, since it is larger than the sum of its proper divisors (1010025).

61607743 is a wasteful number, since it uses less digits than its factorization.

61607743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010024.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 61607743 is about 7849.0600074149. The cubic root of 61607743 is about 394.9527113180.

The spelling of 61607743 in words is "sixty-one million, six hundred seven thousand, seven hundred forty-three".