77228893 has 4 divisors (see below), whose sum is σ = 88261600. Its totient is φ = 66196188.

The previous prime is 77228891. The next prime is 77228923. The reversal of 77228893 is 39882277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77228893 - 2¹ = 77228891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77228891) 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, 5516343 + ... + 5516356.

It is an arithmetic number, because the mean of its divisors is an integer number (22065400).

Almost surely, 2^77228893 is an apocalyptic number.

It is an amenable number.

77228893 is a deficient number, since it is larger than the sum of its proper divisors (11032707).

77228893 is a wasteful number, since it uses less digits than its factorization.

77228893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032706.

The product of its digits is 338688, while the sum is 46.

The square root of 77228893 is about 8787.9970983154. The cubic root of 77228893 is about 425.8532211236.

The spelling of 77228893 in words is "seventy-seven million, two hundred twenty-eight thousand, eight hundred ninety-three".