875649 has 8 divisors (see below), whose sum is σ = 1175872. Its totient is φ = 579600.

The previous prime is 875647. The next prime is 875659. The reversal of 875649 is 946578.

875649 = 212² + 213² + ... + 229².

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

It is not a de Polignac number, because 875649 - 2¹ = 875647 is a prime.

It is a super-2 number, since 2×875649² = 1533522342402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (875647) 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, 514 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (146984).

2⁸⁷⁵⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

875649 is a deficient number, since it is larger than the sum of its proper divisors (300223).

875649 is a wasteful number, since it uses less digits than its factorization.

875649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its digits is 60480, while the sum is 39.

The square root of 875649 is about 935.7611874832. The cubic root of 875649 is about 95.6702007676.

It can be divided in two parts, 8 and 75649, that added together give a palindrome (75657).

The spelling of 875649 in words is "eight hundred seventy-five thousand, six hundred forty-nine".