67988500 has 24 divisors (see below), whose sum is σ = 148487976. Its totient is φ = 27195200.

The previous prime is 67988489. The next prime is 67988507. The reversal of 67988500 is 588976.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 67963536 = 158^2 + 8244^2 .

It is a super-2 number, since 2×67988500² = 9244872264500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67988507) 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, 67489 + ... + 68488.

It is an arithmetic number, because the mean of its divisors is an integer number (6186999).

Almost surely, 2^67988500 is an apocalyptic number.

It is an amenable number.

67988500 is an abundant number, since it is smaller than the sum of its proper divisors (80499476).

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

67988500 is a wasteful number, since it uses less digits than its factorization.

67988500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135996 (or 135984 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 67988500 is about 8245.5139318298. The cubic root of 67988500 is about 408.1424995643.

The spelling of 67988500 in words is "sixty-seven million, nine hundred eighty-eight thousand, five hundred".