668530950 has 96 divisors (see below), whose sum is σ = 1762521120. Its totient is φ = 167116800.

The previous prime is 668530937. The next prime is 668530957. The reversal of 668530950 is 59035866.

It is a super-2 number, since 2×668530950² = 893867262215805000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668530957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1042630 + ... + 1043270.

It is an arithmetic number, because the mean of its divisors is an integer number (18359595).

Almost surely, 2^668530950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668530950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881260560).

668530950 is an abundant number, since it is smaller than the sum of its proper divisors (1093990170).

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

668530950 is a wasteful number, since it uses less digits than its factorization.

668530950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 668530950 is about 25855.9654625388. The cubic root of 668530950 is about 874.3940076200.

The spelling of 668530950 in words is "six hundred sixty-eight million, five hundred thirty thousand, nine hundred fifty".