77751065 has 8 divisors (see below), whose sum is σ = 106630080. Its totient is φ = 53314992.

The previous prime is 77751061. The next prime is 77751071. The reversal of 77751065 is 56015777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77751065 - 2² = 77751061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77751061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110695 + ... + 1110764.

It is an arithmetic number, because the mean of its divisors is an integer number (13328760).

Almost surely, 2^77751065 is an apocalyptic number.

It is an amenable number.

77751065 is a deficient number, since it is larger than the sum of its proper divisors (28879015).

77751065 is a wasteful number, since it uses less digits than its factorization.

77751065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221471.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 77751065 is about 8817.6564346770. The cubic root of 77751065 is about 426.8108477430.

The spelling of 77751065 in words is "seventy-seven million, seven hundred fifty-one thousand, sixty-five".