77322330 has 64 divisors (see below), whose sum is σ = 209070720. Its totient is φ = 20331648.

The previous prime is 77322313. The next prime is 77322331. The reversal of 77322330 is 3322377.

It is a happy number.

77322330 is a `hidden beast` number, since 7 + 7 + 322 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 77322294 and 77322303.

It is not an unprimeable number, because it can be changed into a prime (77322331) 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, 17749 + ... + 21671.

It is an arithmetic number, because the mean of its divisors is an integer number (3266730).

Almost surely, 2^77322330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77322330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104535360).

77322330 is an abundant number, since it is smaller than the sum of its proper divisors (131748390).

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

77322330 is a wasteful number, since it uses less digits than its factorization.

77322330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012 (or 4006 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 77322330 is about 8793.3116628492. The cubic root of 77322330 is about 426.0248943992.

The spelling of 77322330 in words is "seventy-seven million, three hundred twenty-two thousand, three hundred thirty".