77227696 has 160 divisors (see below), whose sum is σ = 199987200. Its totient is φ = 28062720.

The previous prime is 77227691. The next prime is 77227697. The reversal of 77227696 is 69672277.

Its product of digits (444528) is a multiple of the sum of its prime factors (147).

It is not an unprimeable number, because it can be changed into a prime (77227691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1308915 + ... + 1308973.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^77227696 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 77227696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99993600).

77227696 is an abundant number, since it is smaller than the sum of its proper divisors (122759504).

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

77227696 is a wasteful number, since it uses less digits than its factorization.

77227696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 141 counting only the distinct ones).

The product of its digits is 444528, while the sum is 46.

The square root of 77227696 is about 8787.9289937960. The cubic root of 77227696 is about 425.8510209585.

The spelling of 77227696 in words is "seventy-seven million, two hundred twenty-seven thousand, six hundred ninety-six".