77898067 has 8 divisors (see below), whose sum is σ = 83970320. Its totient is φ = 71837280.

The previous prime is 77898053. The next prime is 77898077. The reversal of 77898067 is 76089877.

It is a happy number.

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 77898067 - 2¹¹ = 77896019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77898017) 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, 15784 + ... + 20122.

It is an arithmetic number, because the mean of its divisors is an integer number (10496290).

Almost surely, 2^77898067 is an apocalyptic number.

77898067 is a deficient number, since it is larger than the sum of its proper divisors (6072253).

77898067 is a wasteful number, since it uses less digits than its factorization.

77898067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 77898067 is about 8825.9881599739. The cubic root of 77898067 is about 427.0796652746.

The spelling of 77898067 in words is "seventy-seven million, eight hundred ninety-eight thousand, sixty-seven".