68780577 has 4 divisors (see below), whose sum is σ = 91707440. Its totient is φ = 45853716.

The previous prime is 68780573. The next prime is 68780581. The reversal of 68780577 is 77508786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (68780573) and next prime (68780581).

It is not a de Polignac number, because 68780577 - 2² = 68780573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68780573) 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, 11463427 + ... + 11463432.

It is an arithmetic number, because the mean of its divisors is an integer number (22926860).

Almost surely, 2^68780577 is an apocalyptic number.

It is an amenable number.

68780577 is a deficient number, since it is larger than the sum of its proper divisors (22926863).

68780577 is a wasteful number, since it uses less digits than its factorization.

68780577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22926862.

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 68780577 is about 8293.4056333933. The cubic root of 68780577 is about 409.7213593569.

The spelling of 68780577 in words is "sixty-eight million, seven hundred eighty thousand, five hundred seventy-seven".