649375 has 10 divisors (see below), whose sum is σ = 812240. Its totient is φ = 519000.

The previous prime is 649361. The next prime is 649379. The reversal of 649375 is 573946.

It is not a de Polignac number, because 649375 - 2⁹ = 648863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 649375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649379) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 106 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (81224).

2⁶⁴⁹³⁷⁵ is an apocalyptic number.

649375 is a deficient number, since it is larger than the sum of its proper divisors (162865).

649375 is an equidigital number, since it uses as much as digits as its factorization.

649375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1044 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 649375 is about 805.8380730643. The cubic root of 649375 is about 86.5961375567.

It can be divided in two parts, 649 and 375, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 649375 in words is "six hundred forty-nine thousand, three hundred seventy-five".