649902027 has 16 divisors (see below), whose sum is σ = 923149440. Its totient is φ = 405274752.

The previous prime is 649902023. The next prime is 649902031. The reversal of 649902027 is 720209946.

It is an interprime number because it is at equal distance from previous prime (649902023) and next prime (649902031).

It is not a de Polignac number, because 649902027 - 2² = 649902023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649902023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30777 + ... + 47402.

It is an arithmetic number, because the mean of its divisors is an integer number (57696840).

Almost surely, 2^649902027 is an apocalyptic number.

649902027 is a deficient number, since it is larger than the sum of its proper divisors (273247413).

649902027 is a wasteful number, since it uses less digits than its factorization.

649902027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78362.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 649902027 is about 25493.1760869453. The cubic root of 649902027 is about 866.1955810803.

The spelling of 649902027 in words is "six hundred forty-nine million, nine hundred two thousand, twenty-seven".