649208342 has 16 divisors (see below), whose sum is σ = 1050553152. Its totient is φ = 299744640.

The previous prime is 649208341. The next prime is 649208353. The reversal of 649208342 is 243802946.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 649208296 and 649208305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649208341) 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, 178334 + ... + 181937.

It is an arithmetic number, because the mean of its divisors is an integer number (65659572).

Almost surely, 2^649208342 is an apocalyptic number.

649208342 is a deficient number, since it is larger than the sum of its proper divisors (401344810).

649208342 is a wasteful number, since it uses less digits than its factorization.

649208342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360343.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 649208342 is about 25479.5671470298. The cubic root of 649208342 is about 865.8872880527.

The spelling of 649208342 in words is "six hundred forty-nine million, two hundred eight thousand, three hundred forty-two".