649624334 has 4 divisors (see below), whose sum is σ = 974436504. Its totient is φ = 324812166.

The previous prime is 649624333. The next prime is 649624357. The reversal of 649624334 is 433426946.

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 = 649624291 and 649624300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649624333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162406082 + ... + 162406085.

It is an arithmetic number, because the mean of its divisors is an integer number (243609126).

Almost surely, 2^649624334 is an apocalyptic number.

649624334 is a deficient number, since it is larger than the sum of its proper divisors (324812170).

649624334 is a wasteful number, since it uses less digits than its factorization.

649624334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324812169.

The product of its digits is 373248, while the sum is 41.

The square root of 649624334 is about 25487.7290867586. The cubic root of 649624334 is about 866.0721928839.

It can be divided in two parts, 64962 and 4334, that added together give a palindrome (69296).

The spelling of 649624334 in words is "six hundred forty-nine million, six hundred twenty-four thousand, three hundred thirty-four".