68740771 has 4 divisors (see below), whose sum is σ = 74989944. Its totient is φ = 62491600.

The previous prime is 68740757. The next prime is 68740799. The reversal of 68740771 is 17704786.

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 68740771 - 2²⁵ = 35186339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68740751) 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, 3124570 + ... + 3124591.

It is an arithmetic number, because the mean of its divisors is an integer number (18747486).

Almost surely, 2^68740771 is an apocalyptic number.

68740771 is a deficient number, since it is larger than the sum of its proper divisors (6249173).

68740771 is a wasteful number, since it uses less digits than its factorization.

68740771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249172.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 68740771 is about 8291.0054275703. The cubic root of 68740771 is about 409.6423035321.

The spelling of 68740771 in words is "sixty-eight million, seven hundred forty thousand, seven hundred seventy-one".