77326680 has 64 divisors (see below), whose sum is σ = 233798400. Its totient is φ = 20458880.

The previous prime is 77326663. The next prime is 77326687. The reversal of 77326680 is 8662377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77326687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13261 + ... + 18179.

It is an arithmetic number, because the mean of its divisors is an integer number (3653100).

Almost surely, 2^77326680 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 77326680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116899200).

77326680 is an abundant number, since it is smaller than the sum of its proper divisors (156471720).

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

77326680 is a wasteful number, since it uses less digits than its factorization.

77326680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064 (or 5060 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 77326680 is about 8793.5590064547. The cubic root of 77326680 is about 426.0328833529.

The spelling of 77326680 in words is "seventy-seven million, three hundred twenty-six thousand, six hundred eighty".