649217134 has 4 divisors (see below), whose sum is σ = 973825704. Its totient is φ = 324608566.

The previous prime is 649217117. The next prime is 649217141. The reversal of 649217134 is 431712946.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 649217093 and 649217102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162304282 + ... + 162304285.

It is an arithmetic number, because the mean of its divisors is an integer number (243456426).

Almost surely, 2^649217134 is an apocalyptic number.

649217134 is a deficient number, since it is larger than the sum of its proper divisors (324608570).

649217134 is a wasteful number, since it uses less digits than its factorization.

649217134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324608569.

The product of its digits is 36288, while the sum is 37.

The square root of 649217134 is about 25479.7396768491. The cubic root of 649217134 is about 865.8911968373.

The spelling of 649217134 in words is "six hundred forty-nine million, two hundred seventeen thousand, one hundred thirty-four".