77964067 has 2 divisors, whose sum is σ = 77964068. Its totient is φ = 77964066.

The previous prime is 77964037. The next prime is 77964119. The reversal of 77964067 is 76046977.

It is a weak prime.

It is an emirp because it is prime and its reverse (76046977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77964067 - 2²³ = 69575459 is a prime.

It is not a weakly prime, because it can be changed into another prime (77964037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38982033 + 38982034.

It is an arithmetic number, because the mean of its divisors is an integer number (38982034).

Almost surely, 2^77964067 is an apocalyptic number.

77964067 is a deficient number, since it is larger than the sum of its proper divisors (1).

77964067 is an equidigital number, since it uses as much as digits as its factorization.

77964067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 46.

The square root of 77964067 is about 8829.7263264498. The cubic root of 77964067 is about 427.2002472183.

It can be divided in two parts, 779 and 64067, that added together give a palindrome (64846).

The spelling of 77964067 in words is "seventy-seven million, nine hundred sixty-four thousand, sixty-seven".