649177 has 4 divisors (see below), whose sum is σ = 660240. Its totient is φ = 638116.

The previous prime is 649157. The next prime is 649183. The reversal of 649177 is 771946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649177 - 2¹⁵ = 616409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5443 + ... + 5560.

It is an arithmetic number, because the mean of its divisors is an integer number (165060).

2⁶⁴⁹¹⁷⁷ is an apocalyptic number.

It is an amenable number.

649177 is a deficient number, since it is larger than the sum of its proper divisors (11063).

649177 is a wasteful number, since it uses less digits than its factorization.

649177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11062.

The product of its digits is 10584, while the sum is 34.

The square root of 649177 is about 805.7152102325. The cubic root of 649177 is about 86.5873353606.

The spelling of 649177 in words is "six hundred forty-nine thousand, one hundred seventy-seven".