649892343 has 4 divisors (see below), whose sum is σ = 866523128. Its totient is φ = 433261560.

The previous prime is 649892333. The next prime is 649892363. The reversal of 649892343 is 343298946.

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

It is not a de Polignac number, because 649892343 - 2²⁴ = 633115127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649892292 and 649892301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649892333) 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, 108315388 + ... + 108315393.

It is an arithmetic number, because the mean of its divisors is an integer number (216630782).

Almost surely, 2^649892343 is an apocalyptic number.

649892343 is a deficient number, since it is larger than the sum of its proper divisors (216630785).

649892343 is a wasteful number, since it uses less digits than its factorization.

649892343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216630784.

The product of its digits is 1119744, while the sum is 48.

The square root of 649892343 is about 25492.9861530579. The cubic root of 649892343 is about 866.1912787499.

The spelling of 649892343 in words is "six hundred forty-nine million, eight hundred ninety-two thousand, three hundred forty-three".