649195 has 8 divisors (see below), whose sum is σ = 784944. Its totient is φ = 515424.

The previous prime is 649183. The next prime is 649217. The reversal of 649195 is 591946.

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

It is a cyclic number.

It is not a de Polignac number, because 649195 - 2¹¹ = 647147 is a prime.

It is an Ulam number.

It is a Duffinian number.

649195 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 649195.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649195.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372 + ... + 1198.

It is an arithmetic number, because the mean of its divisors is an integer number (98118).

2⁶⁴⁹¹⁹⁵ is an apocalyptic number.

649195 is a deficient number, since it is larger than the sum of its proper divisors (135749).

649195 is a wasteful number, since it uses less digits than its factorization.

649195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 9720, while the sum is 34.

The square root of 649195 is about 805.7263803550. The cubic root of 649195 is about 86.5881356342.

The spelling of 649195 in words is "six hundred forty-nine thousand, one hundred ninety-five".