649476 has 18 divisors (see below), whose sum is σ = 1641822. Its totient is φ = 216480.

The previous prime is 649471. The next prime is 649483. The reversal of 649476 is 674946.

649476 is a `hidden beast` number, since 649 + 4 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 389376 + 260100 = 624^2 + 510^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18041 = 649476 / (6 + 4 + 9 + 4 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 649476.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649476.

It is not an unprimeable number, because it can be changed into a prime (649471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8985 + ... + 9056.

2⁶⁴⁹⁴⁷⁶ is an apocalyptic number.

It is an amenable number.

649476 is an abundant number, since it is smaller than the sum of its proper divisors (992346).

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

649476 is a wasteful number, since it uses less digits than its factorization.

649476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18051 (or 18046 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 649476 is about 805.9007383047. The cubic root of 649476 is about 86.6006268767.

The spelling of 649476 in words is "six hundred forty-nine thousand, four hundred seventy-six".