77422996 has 48 divisors (see below), whose sum is σ = 161021952. Its totient is φ = 31874400.

The previous prime is 77422979. The next prime is 77422999. The reversal of 77422996 is 69922477.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77422999) 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, 165555 + ... + 166021.

It is an arithmetic number, because the mean of its divisors is an integer number (3354624).

Almost surely, 2^77422996 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 77422996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80510976).

77422996 is an abundant number, since it is smaller than the sum of its proper divisors (83598956).

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

77422996 is a wasteful number, since it uses less digits than its factorization.

77422996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 698 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 77422996 is about 8799.0338105953. The cubic root of 77422996 is about 426.2096949360.

The spelling of 77422996 in words is "seventy-seven million, four hundred twenty-two thousand, nine hundred ninety-six".