649485 has 32 divisors (see below), whose sum is σ = 1226880. Its totient is φ = 324864.

The previous prime is 649483. The next prime is 649487. The reversal of 649485 is 584946.

649485 is a `hidden beast` number, since 649 + 4 + 8 + 5 = 666.

649485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649483) and next prime (649487).

It is not a de Polignac number, because 649485 - 2¹ = 649483 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649485.

It is not an unprimeable number, because it can be changed into a prime (649483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2154 + ... + 2436.

It is an arithmetic number, because the mean of its divisors is an integer number (38340).

2⁶⁴⁹⁴⁸⁵ is an apocalyptic number.

649485 is the 510-th heptagonal number.

It is an amenable number.

649485 is a deficient number, since it is larger than the sum of its proper divisors (577395).

649485 is a wasteful number, since it uses less digits than its factorization.

649485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 308 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 649485 is about 805.9063220995. The cubic root of 649485 is about 86.6010268925.

The spelling of 649485 in words is "six hundred forty-nine thousand, four hundred eighty-five".