77420227 has 16 divisors (see below), whose sum is σ = 86430240. Its totient is φ = 69002752.

The previous prime is 77420221. The next prime is 77420249. The reversal of 77420227 is 72202477.

It is a cyclic number.

It is not a de Polignac number, because 77420227 - 2²³ = 69031619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77420221) 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, 24648 + ... + 27610.

It is an arithmetic number, because the mean of its divisors is an integer number (5401890).

Almost surely, 2^77420227 is an apocalyptic number.

77420227 is a deficient number, since it is larger than the sum of its proper divisors (9010013).

77420227 is a wasteful number, since it uses less digits than its factorization.

77420227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 77420227 is about 8798.8764623672. The cubic root of 77420227 is about 426.2046138069.

The spelling of 77420227 in words is "seventy-seven million, four hundred twenty thousand, two hundred twenty-seven".