77066061 has 4 divisors (see below), whose sum is σ = 102754752. Its totient is φ = 51377372.

The previous prime is 77066051. The next prime is 77066063. The reversal of 77066061 is 16066077.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77066061 - 2¹⁴ = 77049677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77066063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12844341 + ... + 12844346.

It is an arithmetic number, because the mean of its divisors is an integer number (25688688).

Almost surely, 2^77066061 is an apocalyptic number.

It is an amenable number.

77066061 is a deficient number, since it is larger than the sum of its proper divisors (25688691).

77066061 is a wasteful number, since it uses less digits than its factorization.

77066061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25688690.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 77066061 is about 8778.7277552046. The cubic root of 77066061 is about 425.5537161030.

The spelling of 77066061 in words is "seventy-seven million, sixty-six thousand, sixty-one".