4777215 has 32 divisors (see below), whose sum is σ = 8142336. Its totient is φ = 2386560.

The previous prime is 4777211. The next prime is 4777217. The reversal of 4777215 is 5127774.

It is a happy number.

It is not a de Polignac number, because 4777215 - 2² = 4777211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4777211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20932 + ... + 21158.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

Almost surely, 2^4777215 is an apocalyptic number.

4777215 is a deficient number, since it is larger than the sum of its proper divisors (3365121).

4777215 is a wasteful number, since it uses less digits than its factorization.

4777215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 13720, while the sum is 33.

The square root of 4777215 is about 2185.6841034331. The cubic root of 4777215 is about 168.4191983160.

The spelling of 4777215 in words is "four million, seven hundred seventy-seven thousand, two hundred fifteen".