649474331 has 8 divisors (see below), whose sum is σ = 710166528. Its totient is φ = 589057000.

The previous prime is 649474261. The next prime is 649474333. The reversal of 649474331 is 133474946.

649474331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649474331 is a prime.

It is a super-2 number, since 2×649474331² = 843633813255795122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649474333) 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, 63755 + ... + 73236.

It is an arithmetic number, because the mean of its divisors is an integer number (88770816).

Almost surely, 2^649474331 is an apocalyptic number.

649474331 is a deficient number, since it is larger than the sum of its proper divisors (60692197).

649474331 is a wasteful number, since it uses less digits than its factorization.

649474331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137433.

The product of its digits is 217728, while the sum is 41.

The square root of 649474331 is about 25484.7862655350. The cubic root of 649474331 is about 866.0055269556.

The spelling of 649474331 in words is "six hundred forty-nine million, four hundred seventy-four thousand, three hundred thirty-one".