649196658 has 24 divisors (see below), whose sum is σ = 1534465296. Its totient is φ = 196726200.

The previous prime is 649196657. The next prime is 649196659. The reversal of 649196658 is 856691946.

It is a happy number.

649196658 is a `hidden beast` number, since 6 + 491 + 96 + 65 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (649196657) and next prime (649196659).

It is not an unprimeable number, because it can be changed into a prime (649196657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1639188 + ... + 1639583.

It is an arithmetic number, because the mean of its divisors is an integer number (63936054).

Almost surely, 2^649196658 is an apocalyptic number.

649196658 is an abundant number, since it is smaller than the sum of its proper divisors (885268638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649196658 is a wasteful number, since it uses less digits than its factorization.

649196658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278790 (or 3278787 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 649196658 is about 25479.3378642382. The cubic root of 649196658 is about 865.8820934759.

The spelling of 649196658 in words is "six hundred forty-nine million, one hundred ninety-six thousand, six hundred fifty-eight".