486686640 has 80 divisors (see below), whose sum is σ = 1645894656. Its totient is φ = 117984000.

The previous prime is 486686633. The next prime is 486686663. The reversal of 486686640 is 46686684.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 486686640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89536 + ... + 94815.

Almost surely, 2^486686640 is an apocalyptic number.

486686640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

486686640 is an abundant number, since it is smaller than the sum of its proper divisors (1159208016).

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

486686640 is a wasteful number, since it uses less digits than its factorization.

486686640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184378 (or 184372 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 486686640 is about 22060.9754997371. The cubic root of 486686640 is about 786.5925127204.

The spelling of 486686640 in words is "four hundred eighty-six million, six hundred eighty-six thousand, six hundred forty".