491307677 has 8 divisors (see below), whose sum is σ = 563969856. Its totient is φ = 419264352.

The previous prime is 491307673. The next prime is 491307709. The reversal of 491307677 is 776703194.

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

It is a cyclic number.

It is not a de Polignac number, because 491307677 - 2² = 491307673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491307673) 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, 153008 + ... + 156185.

It is an arithmetic number, because the mean of its divisors is an integer number (70496232).

Almost surely, 2^491307677 is an apocalyptic number.

It is an amenable number.

491307677 is a deficient number, since it is larger than the sum of its proper divisors (72662179).

491307677 is a wasteful number, since it uses less digits than its factorization.

491307677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309427.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 491307677 is about 22165.4613531954. The cubic root of 491307677 is about 789.0742116671.

The spelling of 491307677 in words is "four hundred ninety-one million, three hundred seven thousand, six hundred seventy-seven".