649470501 has 16 divisors (see below), whose sum is σ = 971709120. Its totient is φ = 428691600.

The previous prime is 649470439. The next prime is 649470511. The reversal of 649470501 is 105074946.

649470501 is a `hidden beast` number, since 64 + 94 + 7 + 0 + 501 = 666.

It is not a de Polignac number, because 649470501 - 2⁷ = 649470373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649470511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116355 + ... + 121808.

It is an arithmetic number, because the mean of its divisors is an integer number (60731820).

Almost surely, 2^649470501 is an apocalyptic number.

It is an amenable number.

649470501 is a deficient number, since it is larger than the sum of its proper divisors (322238619).

649470501 is a wasteful number, since it uses less digits than its factorization.

649470501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238273 (or 238267 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 649470501 is about 25484.7111225535. The cubic root of 649470501 is about 866.0038246519.

The spelling of 649470501 in words is "six hundred forty-nine million, four hundred seventy thousand, five hundred one".