651461998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
Almost surely, 2651461998 is an apocalyptic number.
651461998 is a wasteful number, since it uses less digits than its factorization.
651461998 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1741907.
The square root of 651461998 is about 25523.7536032614. The cubic root of 651461998 is about 866.8880753514. Note that the first 3 decimals are identical.
The spelling of 651461998 in words is "six hundred fifty-one million, four hundred sixty-one thousand, nine hundred ninety-eight".