77713522 has 4 divisors (see below), whose sum is σ = 116570286. Its totient is φ = 38856760.

The previous prime is 77713487. The next prime is 77713549. The reversal of 77713522 is 22531777.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22531777 = 19 ⋅1185883.

It can be written as a sum of positive squares in only one way, i.e., 68707521 + 9006001 = 8289^2 + 3001^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19428379 + ... + 19428382.

Almost surely, 2^77713522 is an apocalyptic number.

77713522 is a deficient number, since it is larger than the sum of its proper divisors (38856764).

77713522 is a wasteful number, since it uses less digits than its factorization.

77713522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38856763.

The product of its digits is 20580, while the sum is 34.

The square root of 77713522 is about 8815.5273239892. The cubic root of 77713522 is about 426.7421398334.

The spelling of 77713522 in words is "seventy-seven million, seven hundred thirteen thousand, five hundred twenty-two".