4778641 has 16 divisors (see below), whose sum is σ = 5796864. Its totient is φ = 3850704.

The previous prime is 4778611. The next prime is 4778659. The reversal of 4778641 is 1468774.

It is a cyclic number.

It is not a de Polignac number, because 4778641 - 2⁹ = 4778129 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 4778641.

It is not an unprimeable number, because it can be changed into a prime (4778611) 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, 10566 + ... + 11008.

It is an arithmetic number, because the mean of its divisors is an integer number (362304).

Almost surely, 2^4778641 is an apocalyptic number.

It is an amenable number.

4778641 is a deficient number, since it is larger than the sum of its proper divisors (1018223).

4778641 is a wasteful number, since it uses less digits than its factorization.

4778641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 37632, while the sum is 37.

The square root of 4778641 is about 2186.0102927480. The cubic root of 4778641 is about 168.4359543747.

The spelling of 4778641 in words is "four million, seven hundred seventy-eight thousand, six hundred forty-one".