646036146 has 48 divisors (see below), whose sum is σ = 1601755584. Its totient is φ = 184345632.

The previous prime is 646036109. The next prime is 646036151. The reversal of 646036146 is 641630646.

646036146 is a `hidden beast` number, since 6 + 4 + 603 + 6 + 1 + 46 = 666.

It is a super-3 number, since 3×646036146³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 646036146.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111456 + ... + 117108.

It is an arithmetic number, because the mean of its divisors is an integer number (33369908).

Almost surely, 2^646036146 is an apocalyptic number.

646036146 is an abundant number, since it is smaller than the sum of its proper divisors (955719438).

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

646036146 is a wasteful number, since it uses less digits than its factorization.

646036146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575 (or 6572 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 646036146 is about 25417.2411170056. The cubic root of 646036146 is about 864.4746700519.

The spelling of 646036146 in words is "six hundred forty-six million, thirty-six thousand, one hundred forty-six".