649374 has 16 divisors (see below), whose sum is σ = 1416960. Its totient is φ = 196760.

The previous prime is 649361. The next prime is 649379. The reversal of 649374 is 473946.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649379) by changing a digit.

649374 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4854 + ... + 4985.

It is an arithmetic number, because the mean of its divisors is an integer number (88560).

2⁶⁴⁹³⁷⁴ is an apocalyptic number.

649374 is an abundant number, since it is smaller than the sum of its proper divisors (767586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649374 is a wasteful number, since it uses less digits than its factorization.

649374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855.

The product of its digits is 18144, while the sum is 33.

The square root of 649374 is about 805.8374525920. The cubic root of 649374 is about 86.5960931057.

The spelling of 649374 in words is "six hundred forty-nine thousand, three hundred seventy-four".