646455030 has 64 divisors (see below), whose sum is σ = 1673844480. Its totient is φ = 158841216.

The previous prime is 646455011. The next prime is 646455049. The reversal of 646455030 is 30554646.

646455030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (646455011) and next prime (646455049).

It is a junction number, because it is equal to n+sod(n) for n = 646454982 and 646455000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287089 + ... + 289331.

It is an arithmetic number, because the mean of its divisors is an integer number (26153820).

Almost surely, 2^646455030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646455030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836922240).

646455030 is an abundant number, since it is smaller than the sum of its proper divisors (1027389450).

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

646455030 is a wasteful number, since it uses less digits than its factorization.

646455030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 646455030 is about 25425.4799364732. The cubic root of 646455030 is about 864.6614688733.

The spelling of 646455030 in words is "six hundred forty-six million, four hundred fifty-five thousand, thirty".