649073305 has 8 divisors (see below), whose sum is σ = 779486400. Its totient is φ = 518859696.

The previous prime is 649073303. The next prime is 649073323. The reversal of 649073305 is 503370946.

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

It is a cyclic number.

It is not a de Polignac number, because 649073305 - 2¹ = 649073303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649073303) 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, 42615 + ... + 55804.

It is an arithmetic number, because the mean of its divisors is an integer number (97435800).

Almost surely, 2^649073305 is an apocalyptic number.

It is an amenable number.

649073305 is a deficient number, since it is larger than the sum of its proper divisors (130413095).

649073305 is a wasteful number, since it uses less digits than its factorization.

649073305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99743.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 649073305 is about 25476.9171015647. The cubic root of 649073305 is about 865.8272482975.

The spelling of 649073305 in words is "six hundred forty-nine million, seventy-three thousand, three hundred five".