667012500 has 486 divisors, whose sum is σ = 2694636126. Its totient is φ = 138600000.

The previous prime is 667012483. The next prime is 667012519. The reversal of 667012500 is 5210766.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

667012500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 308213136 + 358799364 = 17556^2 + 18942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 60637495 + ... + 60637505.

Almost surely, 2^667012500 is an apocalyptic number.

667012500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347318063).

667012500 is an abundant number, since it is smaller than the sum of its proper divisors (2027623626).

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

667012500 is a wasteful number, since it uses less digits than its factorization.

667012500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 667012500 is about 25826.5851401226. The cubic root of 667012500 is about 873.7314952456.

The spelling of 667012500 in words is "six hundred sixty-seven million, twelve thousand, five hundred".