77052066 has 32 divisors (see below), whose sum is σ = 189667968. Its totient is φ = 20321280.

The previous prime is 77052037. The next prime is 77052067. The reversal of 77052066 is 66025077.

It is not an unprimeable number, because it can be changed into a prime (77052067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70015 + ... + 71106.

It is an arithmetic number, because the mean of its divisors is an integer number (5927124).

Almost surely, 2^77052066 is an apocalyptic number.

77052066 is an abundant number, since it is smaller than the sum of its proper divisors (112615902).

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

77052066 is a wasteful number, since it uses less digits than its factorization.

77052066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141146.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 77052066 is about 8777.9306217354. The cubic root of 77052066 is about 425.5279547206.

The spelling of 77052066 in words is "seventy-seven million, fifty-two thousand, sixty-six".