77632223677 has 8 divisors (see below), whose sum is σ = 78343681464. Its totient is φ = 76921195008.

The previous prime is 77632223657. The next prime is 77632223719.

77632223677 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 27336984921 + 50295238756 = 165339^2 + 224266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77632223677 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 (77632223657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261993 + ... + 473185.

It is an arithmetic number, because the mean of its divisors is an integer number (9792960183).

Almost surely, 2^77632223677 is an apocalyptic number.

It is an amenable number.

77632223677 is a deficient number, since it is larger than the sum of its proper divisors (711457787).

77632223677 is a wasteful number, since it uses less digits than its factorization.

77632223677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214559.

The product of its digits is 6223392, while the sum is 52.

The spelling of 77632223677 in words is "seventy-seven billion, six hundred thirty-two million, two hundred twenty-three thousand, six hundred seventy-seven".