77123696 has 60 divisors (see below), whose sum is σ = 171077592. Its totient is φ = 33475584.

The previous prime is 77123693. The next prime is 77123723. The reversal of 77123696 is 69632177.

It is a congruent number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59471 + ... + 60753.

Almost surely, 2^77123696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77123696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85538796).

77123696 is an abundant number, since it is smaller than the sum of its proper divisors (93953896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77123696 is a wasteful number, since it uses less digits than its factorization.

77123696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1315 counting only the distinct ones).

The product of its digits is 95256, while the sum is 41.

The square root of 77123696 is about 8782.0097927525. The cubic root of 77123696 is about 425.6597752268.

The spelling of 77123696 in words is "seventy-seven million, one hundred twenty-three thousand, six hundred ninety-six".