635979478 has 8 divisors (see below), whose sum is σ = 957961440. Its totient is φ = 316659000.

The previous prime is 635979451. The next prime is 635979497. The reversal of 635979478 is 874979536.

635979478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664773 + ... + 665728.

It is an arithmetic number, because the mean of its divisors is an integer number (119745180).

Almost surely, 2^635979478 is an apocalyptic number.

635979478 is a deficient number, since it is larger than the sum of its proper divisors (321981962).

635979478 is a wasteful number, since it uses less digits than its factorization.

635979478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330742.

The product of its digits is 11430720, while the sum is 58.

The square root of 635979478 is about 25218.6335474387. The cubic root of 635979478 is about 859.9655106053.

Adding to 635979478 its sum of digits (58), we get a palindrome (635979536).

The spelling of 635979478 in words is "six hundred thirty-five million, nine hundred seventy-nine thousand, four hundred seventy-eight".