635118980 has 48 divisors (see below), whose sum is σ = 1431606960. Its totient is φ = 235819008.

The previous prime is 635118977. The next prime is 635119013. The reversal of 635118980 is 89811536.

It can be written as a sum of positive squares in 8 ways, for example, as 73239364 + 561879616 = 8558^2 + 23704^2 .

It is a super-2 number, since 2×635118980² = 806752237512480800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12026 + ... + 37614.

It is an arithmetic number, because the mean of its divisors is an integer number (29825145).

Almost surely, 2^635118980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 635118980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715803480).

635118980 is an abundant number, since it is smaller than the sum of its proper divisors (796487980).

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

635118980 is a wasteful number, since it uses less digits than its factorization.

635118980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25688 (or 25686 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 635118980 is about 25201.5670147711. The cubic root of 635118980 is about 859.5774830956.

The spelling of 635118980 in words is "six hundred thirty-five million, one hundred eighteen thousand, nine hundred eighty".