648291334 has 16 divisors (see below), whose sum is σ = 978170256. Its totient is φ = 322240000.

The previous prime is 648291307. The next prime is 648291367. The reversal of 648291334 is 433192846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381174 + ... + 382870.

It is an arithmetic number, because the mean of its divisors is an integer number (61135641).

Almost surely, 2^648291334 is an apocalyptic number.

648291334 is a deficient number, since it is larger than the sum of its proper divisors (329878922).

648291334 is a wasteful number, since it uses less digits than its factorization.

648291334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711.

The product of its digits is 124416, while the sum is 40.

The square root of 648291334 is about 25461.5658198784. The cubic root of 648291334 is about 865.4794068089.

The spelling of 648291334 in words is "six hundred forty-eight million, two hundred ninety-one thousand, three hundred thirty-four".