675646650 has 384 divisors, whose sum is σ = 2314137600. Its totient is φ = 141523200.

The previous prime is 675646649. The next prime is 675646651. The reversal of 675646650 is 56646576.

It is an interprime number because it is at equal distance from previous prime (675646649) and next prime (675646651).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 675646596 and 675646605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675646651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9516115 + ... + 9516185.

It is an arithmetic number, because the mean of its divisors is an integer number (6026400).

Almost surely, 2^675646650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 675646650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157068800).

675646650 is an abundant number, since it is smaller than the sum of its proper divisors (1638490950).

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

675646650 is a wasteful number, since it uses less digits than its factorization.

675646650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 675646650 is about 25993.2039194863. The cubic root of 675646650 is about 877.4853529588.

The spelling of 675646650 in words is "six hundred seventy-five million, six hundred forty-six thousand, six hundred fifty".