It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642477.
2642477 is an apocalyptic number.
It is an amenable number.
642477 is a wasteful number, since it uses less digits than its factorization.
642477 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19483.
The square root of 642477 is about 801.5466299599. The cubic root of 642477 is about 86.2884222847.
Subtracting 642477 from its reverse (774246), we obtain a square (131769 = 3632).
The spelling of 642477 in words is "six hundred forty-two thousand, four hundred seventy-seven".