77966673 has 4 divisors (see below), whose sum is σ = 103955568. Its totient is φ = 51977780.

The previous prime is 77966653. The next prime is 77966677. The reversal of 77966673 is 37666977.

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 77966673 - 2⁸ = 77966417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77966677) 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, 12994443 + ... + 12994448.

It is an arithmetic number, because the mean of its divisors is an integer number (25988892).

Almost surely, 2^77966673 is an apocalyptic number.

It is an amenable number.

77966673 is a deficient number, since it is larger than the sum of its proper divisors (25988895).

77966673 is a wasteful number, since it uses less digits than its factorization.

77966673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988894.

The product of its digits is 2000376, while the sum is 51.

The square root of 77966673 is about 8829.8738949093. The cubic root of 77966673 is about 427.2050069813.

The spelling of 77966673 in words is "seventy-seven million, nine hundred sixty-six thousand, six hundred seventy-three".