646046532 has 36 divisors (see below), whose sum is σ = 1637295660. Its totient is φ = 214790592.

The previous prime is 646046501. The next prime is 646046539. The reversal of 646046532 is 235640646.

646046532 is a `hidden beast` number, since 64 + 60 + 4 + 6 + 532 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 263218176 + 382828356 = 16224^2 + 19566^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×646046532² = 834752243018454048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (646046539) 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, 9063 + ... + 37070.

It is an arithmetic number, because the mean of its divisors is an integer number (45480435).

Almost surely, 2^646046532 is an apocalyptic number.

It is an amenable number.

646046532 is an abundant number, since it is smaller than the sum of its proper divisors (991249128).

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

646046532 is a wasteful number, since it uses less digits than its factorization.

646046532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46532 (or 46527 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 646046532 is about 25417.4454263209. The cubic root of 646046532 is about 864.4793026027.

The spelling of 646046532 in words is "six hundred forty-six million, forty-six thousand, five hundred thirty-two".