77228895 has 16 divisors (see below), whose sum is σ = 123678720. Its totient is φ = 41151264.

The previous prime is 77228891. The next prime is 77228923. The reversal of 77228895 is 59882277.

It is not a de Polignac number, because 77228895 - 2² = 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 15 ways as a sum of consecutive naturals, for example, 24922 + ... + 27848.

It is an arithmetic number, because the mean of its divisors is an integer number (7729920).

Almost surely, 2^77228895 is an apocalyptic number.

77228895 is a deficient number, since it is larger than the sum of its proper divisors (46449825).

77228895 is a wasteful number, since it uses less digits than its factorization.

77228895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694.

The product of its digits is 564480, while the sum is 48.

The square root of 77228895 is about 8787.9972121070. The cubic root of 77228895 is about 425.8532247997.

The spelling of 77228895 in words is "seventy-seven million, two hundred twenty-eight thousand, eight hundred ninety-five".