77123697 has 24 divisors (see below), whose sum is σ = 121275936. Its totient is φ = 43460928.

The previous prime is 77123693. The next prime is 77123723. The reversal of 77123697 is 79632177.

It is not a de Polignac number, because 77123697 - 2² = 77123693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77123693) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 7138 + ... + 14324.

It is an arithmetic number, because the mean of its divisors is an integer number (5053164).

Almost surely, 2^77123697 is an apocalyptic number.

It is an amenable number.

77123697 is a deficient number, since it is larger than the sum of its proper divisors (44152239).

77123697 is a wasteful number, since it uses less digits than its factorization.

77123697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277 (or 7270 counting only the distinct ones).

The product of its digits is 111132, while the sum is 42.

The square root of 77123697 is about 8782.0098496870. The cubic root of 77123697 is about 425.6597770665.

The spelling of 77123697 in words is "seventy-seven million, one hundred twenty-three thousand, six hundred ninety-seven".