491782064 has 10 divisors (see below), whose sum is σ = 952827780. Its totient is φ = 245891024.

The previous prime is 491782063. The next prime is 491782097. The reversal of 491782064 is 460287194.

It is not an unprimeable number, because it can be changed into a prime (491782063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15368174 + ... + 15368205.

It is an arithmetic number, because the mean of its divisors is an integer number (95282778).

Almost surely, 2^491782064 is an apocalyptic number.

It is an amenable number.

491782064 is a deficient number, since it is larger than the sum of its proper divisors (461045716).

491782064 is a wasteful number, since it uses less digits than its factorization.

491782064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30736387 (or 30736381 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 491782064 is about 22176.1598118340. The cubic root of 491782064 is about 789.3280961146.

The spelling of 491782064 in words is "four hundred ninety-one million, seven hundred eighty-two thousand, sixty-four".