494661680 has 40 divisors (see below), whose sum is σ = 1176842832. Its totient is φ = 193261824.

The previous prime is 494661677. The next prime is 494661683. The reversal of 494661680 is 86166494.

It is an interprime number because it is at equal distance from previous prime (494661677) and next prime (494661683).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (494661683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68459 + ... + 75338.

Almost surely, 2^494661680 is an apocalyptic number.

494661680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

494661680 is an abundant number, since it is smaller than the sum of its proper divisors (682181152).

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

494661680 is a wasteful number, since it uses less digits than its factorization.

494661680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143853 (or 143847 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 494661680 is about 22240.9909851157. The cubic root of 494661680 is about 790.8657282864.

The spelling of 494661680 in words is "four hundred ninety-four million, six hundred sixty-one thousand, six hundred eighty".