649101 has 8 divisors (see below), whose sum is σ = 879904. Its totient is φ = 425520.

The previous prime is 649093. The next prime is 649123. The reversal of 649101 is 101946.

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

It is not a de Polignac number, because 649101 - 2³ = 649093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649141) 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, 1591 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (109988).

2⁶⁴⁹¹⁰¹ is an apocalyptic number.

649101 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

649101 is a deficient number, since it is larger than the sum of its proper divisors (230803).

649101 is a wasteful number, since it uses less digits than its factorization.

649101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 649101 is about 805.6680457856. The cubic root of 649101 is about 86.5839562646.

The spelling of 649101 in words is "six hundred forty-nine thousand, one hundred one".