61586723 has 4 divisors (see below), whose sum is σ = 67185528. Its totient is φ = 55987920.

The previous prime is 61586713. The next prime is 61586753. The reversal of 61586723 is 32768516.

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-61586723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61586713) 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, 2799386 + ... + 2799407.

It is an arithmetic number, because the mean of its divisors is an integer number (16796382).

Almost surely, 2^61586723 is an apocalyptic number.

61586723 is a deficient number, since it is larger than the sum of its proper divisors (5598805).

61586723 is a wasteful number, since it uses less digits than its factorization.

61586723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598804.

The product of its digits is 60480, while the sum is 38.

The square root of 61586723 is about 7847.7208793382. The cubic root of 61586723 is about 394.9077881209.

The spelling of 61586723 in words is "sixty-one million, five hundred eighty-six thousand, seven hundred twenty-three".