649799366 has 8 divisors (see below), whose sum is σ = 989247000. Its totient is φ = 320050368.

The previous prime is 649799363. The next prime is 649799387. The reversal of 649799366 is 663997946.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649799363) 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, 2424491 + ... + 2424758.

It is an arithmetic number, because the mean of its divisors is an integer number (123655875).

Almost surely, 2^649799366 is an apocalyptic number.

649799366 is a deficient number, since it is larger than the sum of its proper divisors (339447634).

649799366 is a wasteful number, since it uses less digits than its factorization.

649799366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849318.

The product of its digits is 13226976, while the sum is 59.

The square root of 649799366 is about 25491.1625078183. The cubic root of 649799366 is about 866.1499694939.

The spelling of 649799366 in words is "six hundred forty-nine million, seven hundred ninety-nine thousand, three hundred sixty-six".