4617978 has 8 divisors (see below), whose sum is σ = 9235968. Its totient is φ = 1539324.

The previous prime is 4617967. The next prime is 4617979. The reversal of 4617978 is 8797164.

It is a sphenic number, since it is the product of 3 distinct primes.

4617978 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4617979) 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, 384826 + ... + 384837.

It is an arithmetic number, because the mean of its divisors is an integer number (1154496).

Almost surely, 2^4617978 is an apocalyptic number.

4617978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4617978 is a wasteful number, since it uses less digits than its factorization.

4617978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769668.

The product of its digits is 84672, while the sum is 42.

The square root of 4617978 is about 2148.9481147762. The cubic root of 4617978 is about 166.5267296498.

The spelling of 4617978 in words is "four million, six hundred seventeen thousand, nine hundred seventy-eight".