649658158 has 8 divisors (see below), whose sum is σ = 995221152. Its totient is φ = 317917776.

The previous prime is 649658137. The next prime is 649658167. The reversal of 649658158 is 851856946.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3455535 + ... + 3455722.

It is an arithmetic number, because the mean of its divisors is an integer number (124402644).

Almost surely, 2^649658158 is an apocalyptic number.

649658158 is a deficient number, since it is larger than the sum of its proper divisors (345562994).

649658158 is a wasteful number, since it uses less digits than its factorization.

649658158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911306.

The product of its digits is 2073600, while the sum is 52.

The square root of 649658158 is about 25488.3926131092. The cubic root of 649658158 is about 866.0872238877.

The spelling of 649658158 in words is "six hundred forty-nine million, six hundred fifty-eight thousand, one hundred fifty-eight".