77606099 has 4 divisors (see below), whose sum is σ = 79410936. Its totient is φ = 75801264.

The previous prime is 77606047. The next prime is 77606101. The reversal of 77606099 is 99060677.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77606099 - 2¹² = 77602003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77606029) 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 3 ways as a sum of consecutive naturals, for example, 902354 + ... + 902439.

It is an arithmetic number, because the mean of its divisors is an integer number (19852734).

Almost surely, 2^77606099 is an apocalyptic number.

77606099 is a deficient number, since it is larger than the sum of its proper divisors (1804837).

77606099 is a wasteful number, since it uses less digits than its factorization.

77606099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804836.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 77606099 is about 8809.4323880713. The cubic root of 77606099 is about 426.5454213461.

The spelling of 77606099 in words is "seventy-seven million, six hundred six thousand, ninety-nine".