646486632 has 48 divisors (see below), whose sum is σ = 1910076480. Its totient is φ = 195904800.

The previous prime is 646486619. The next prime is 646486649. The reversal of 646486632 is 236684646.

646486632 is a `hidden beast` number, since 6 + 4 + 6 + 4 + 8 + 6 + 632 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407344 + ... + 408927.

It is an arithmetic number, because the mean of its divisors is an integer number (39793260).

Almost surely, 2^646486632 is an apocalyptic number.

It is an amenable number.

646486632 is an abundant number, since it is smaller than the sum of its proper divisors (1263589848).

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

646486632 is a wasteful number, since it uses less digits than its factorization.

646486632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816294 (or 816287 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 646486632 is about 25426.1013920735. The cubic root of 646486632 is about 864.6755583228.

It can be divided in two parts, 6464 and 86632, that added together give a triangular number (93096 = T₄₃₁).

The spelling of 646486632 in words is "six hundred forty-six million, four hundred eighty-six thousand, six hundred thirty-two".