601994988 has 216 divisors, whose sum is σ = 1855369152. Its totient is φ = 163957248.

The previous prime is 601994977. The next prime is 601994989. The reversal of 601994988 is 889499106.

601994988 is a `hidden beast` number, since 60 + 1 + 99 + 498 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (601994989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4394056 + ... + 4394192.

It is an arithmetic number, because the mean of its divisors is an integer number (8589672).

Almost surely, 2^601994988 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 601994988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927684576).

601994988 is an abundant number, since it is smaller than the sum of its proper divisors (1253374164).

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

601994988 is a wasteful number, since it uses less digits than its factorization.

601994988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 601994988 is about 24535.5861556230. The cubic root of 601994988 is about 844.3664300633.

The spelling of 601994988 in words is "six hundred one million, nine hundred ninety-four thousand, nine hundred eighty-eight".