77712241 has 4 divisors (see below), whose sum is σ = 77765184. Its totient is φ = 77659300.

The previous prime is 77712227. The next prime is 77712251. The reversal of 77712241 is 14221777.

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 a cyclic number.

It is not a de Polignac number, because 77712241 - 2⁷ = 77712113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77712211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24205 + ... + 27226.

It is an arithmetic number, because the mean of its divisors is an integer number (19441296).

Almost surely, 2^77712241 is an apocalyptic number.

It is an amenable number.

77712241 is a deficient number, since it is larger than the sum of its proper divisors (52943).

77712241 is a wasteful number, since it uses less digits than its factorization.

77712241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52942.

The product of its digits is 5488, while the sum is 31.

The square root of 77712241 is about 8815.4546677979. The cubic root of 77712241 is about 426.7397950691.

The spelling of 77712241 in words is "seventy-seven million, seven hundred twelve thousand, two hundred forty-one".