61768711 has 4 divisors (see below), whose sum is σ = 61801992. Its totient is φ = 61735432.

The previous prime is 61768697. The next prime is 61768717. The reversal of 61768711 is 11786716.

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 61768711 - 2⁷ = 61768583 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 (61768717) 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, 13681 + ... + 17626.

It is an arithmetic number, because the mean of its divisors is an integer number (15450498).

Almost surely, 2^61768711 is an apocalyptic number.

61768711 is a deficient number, since it is larger than the sum of its proper divisors (33281).

61768711 is a wasteful number, since it uses less digits than its factorization.

61768711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33280.

The product of its digits is 14112, while the sum is 37.

The square root of 61768711 is about 7859.3072849966. The cubic root of 61768711 is about 395.2963881355.

The spelling of 61768711 in words is "sixty-one million, seven hundred sixty-eight thousand, seven hundred eleven".