649461 has 8 divisors (see below), whose sum is σ = 889504. Its totient is φ = 421200.

The previous prime is 649457. The next prime is 649469. The reversal of 649461 is 164946.

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

It is not a de Polignac number, because 649461 - 2² = 649457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649469) 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, 2815 + ... + 3036.

It is an arithmetic number, because the mean of its divisors is an integer number (111188).

2⁶⁴⁹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

649461 is a deficient number, since it is larger than the sum of its proper divisors (240043).

649461 is a wasteful number, since it uses less digits than its factorization.

649461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its digits is 5184, while the sum is 30.

The square root of 649461 is about 805.8914318939. The cubic root of 649461 is about 86.5999601754.

It can be divided in two parts, 6494 and 61, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 649461 in words is "six hundred forty-nine thousand, four hundred sixty-one".