494277681 has 8 divisors (see below), whose sum is σ = 659157184. Its totient is φ = 329458320.

The previous prime is 494277677. The next prime is 494277691. The reversal of 494277681 is 186772494.

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

It is not a de Polignac number, because 494277681 - 2² = 494277677 is a prime.

It is a super-3 number, since 3×494277681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494277681.

It is not an unprimeable number, because it can be changed into a prime (494277611) 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, 10191 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (82394648).

Almost surely, 2^494277681 is an apocalyptic number.

It is an amenable number.

494277681 is a deficient number, since it is larger than the sum of its proper divisors (164879503).

494277681 is a wasteful number, since it uses less digits than its factorization.

494277681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30071.

The product of its digits is 677376, while the sum is 48.

The square root of 494277681 is about 22232.3566227245. The cubic root of 494277681 is about 790.6610292777.

The spelling of 494277681 in words is "four hundred ninety-four million, two hundred seventy-seven thousand, six hundred eighty-one".