820614648 has 32 divisors (see below), whose sum is σ = 2344613760. Its totient is φ = 234461280.

The previous prime is 820614647. The next prime is 820614673. The reversal of 820614648 is 846416028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820614647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442138 + ... + 2442473.

It is an arithmetic number, because the mean of its divisors is an integer number (73269180).

Almost surely, 2^820614648 is an apocalyptic number.

It is an amenable number.

820614648 is an abundant number, since it is smaller than the sum of its proper divisors (1523999112).

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

820614648 is a wasteful number, since it uses less digits than its factorization.

820614648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884627 (or 4884623 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 820614648 is about 28646.3723357775. The cubic root of 820614648 is about 936.2239675163.

The spelling of 820614648 in words is "eight hundred twenty million, six hundred fourteen thousand, six hundred forty-eight".