649073515 has 8 divisors (see below), whose sum is σ = 824705280. Its totient is φ = 488714112.

The previous prime is 649073473. The next prime is 649073539. The reversal of 649073515 is 515370946.

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 649073515 - 2¹⁵ = 649040747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3817995 + ... + 3818164.

It is an arithmetic number, because the mean of its divisors is an integer number (103088160).

Almost surely, 2^649073515 is an apocalyptic number.

649073515 is a deficient number, since it is larger than the sum of its proper divisors (175631765).

649073515 is a wasteful number, since it uses less digits than its factorization.

649073515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636181.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 649073515 is about 25476.9212229421. The cubic root of 649073515 is about 865.8273416736.

The spelling of 649073515 in words is "six hundred forty-nine million, seventy-three thousand, five hundred fifteen".