77068755 has 12 divisors (see below), whose sum is σ = 133585920. Its totient is φ = 41103312.

The previous prime is 77068751. The next prime is 77068763. The reversal of 77068755 is 55786077.

It is not a de Polignac number, because 77068755 - 2² = 77068751 is a prime.

It is a super-3 number, since 3×77068755³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1712639 = 77068755 / (7 + 7 + 0 + 6 + 8 + 7 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 77068755.

It is not an unprimeable number, because it can be changed into a prime (77068751) 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 11 ways as a sum of consecutive naturals, for example, 856275 + ... + 856364.

It is an arithmetic number, because the mean of its divisors is an integer number (11132160).

Almost surely, 2^77068755 is an apocalyptic number.

77068755 is a deficient number, since it is larger than the sum of its proper divisors (56517165).

77068755 is a wasteful number, since it uses less digits than its factorization.

77068755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712650 (or 1712647 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The square root of 77068755 is about 8778.8811929539. The cubic root of 77068755 is about 425.5586747421.

It can be divided in two parts, 7706 and 8755, that added together give a palindrome (16461).

The spelling of 77068755 in words is "seventy-seven million, sixty-eight thousand, seven hundred fifty-five".