649670822 has 8 divisors (see below), whose sum is σ = 978799896. Its totient is φ = 323404192.

The previous prime is 649670821. The next prime is 649670839. The reversal of 649670822 is 228076946.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649670821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715043 + ... + 715950.

It is an arithmetic number, because the mean of its divisors is an integer number (122349987).

Almost surely, 2^649670822 is an apocalyptic number.

649670822 is a deficient number, since it is larger than the sum of its proper divisors (329129074).

649670822 is a wasteful number, since it uses less digits than its factorization.

649670822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431222.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 649670822 is about 25488.6410387058. The cubic root of 649670822 is about 866.0928514921.

The spelling of 649670822 in words is "six hundred forty-nine million, six hundred seventy thousand, eight hundred twenty-two".