77963613 has 32 divisors (see below), whose sum is σ = 128464896. Its totient is φ = 40955328.

The previous prime is 77963573. The next prime is 77963651. The reversal of 77963613 is 31636977.

It is not a de Polignac number, because 77963613 - 2¹⁶ = 77898077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77963693) 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 31 ways as a sum of consecutive naturals, for example, 94320 + ... + 95142.

It is an arithmetic number, because the mean of its divisors is an integer number (4014528).

Almost surely, 2^77963613 is an apocalyptic number.

It is an amenable number.

77963613 is a deficient number, since it is larger than the sum of its proper divisors (50501283).

77963613 is a wasteful number, since it uses less digits than its factorization.

77963613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193.

The product of its digits is 142884, while the sum is 42.

The square root of 77963613 is about 8829.7006178013. The cubic root of 77963613 is about 427.1994179932.

The spelling of 77963613 in words is "seventy-seven million, nine hundred sixty-three thousand, six hundred thirteen".