77226863 has 4 divisors (see below), whose sum is σ = 88259280. Its totient is φ = 66194448.

The previous prime is 77226857. The next prime is 77226899. The reversal of 77226863 is 36862277.

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 77226863 - 2⁸ = 77226607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77226863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77226823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5516198 + ... + 5516211.

It is an arithmetic number, because the mean of its divisors is an integer number (22064820).

Almost surely, 2^77226863 is an apocalyptic number.

77226863 is a deficient number, since it is larger than the sum of its proper divisors (11032417).

77226863 is a wasteful number, since it uses less digits than its factorization.

77226863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032416.

The product of its digits is 169344, while the sum is 41.

The square root of 77226863 is about 8787.8815991114. The cubic root of 77226863 is about 425.8494898361.

The spelling of 77226863 in words is "seventy-seven million, two hundred twenty-six thousand, eight hundred sixty-three".