67750506 has 40 divisors (see below), whose sum is σ = 153196164. Its totient is φ = 22377600.

The previous prime is 67750481. The next prime is 67750513. The reversal of 67750506 is 60505776.

It can be written as a sum of positive squares in 2 ways, for example, as 58660281 + 9090225 = 7659^2 + 3015^2 .

It is a super-3 number, since 3×67750506³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16456 + ... + 20156.

Almost surely, 2^67750506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67750506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76598082).

67750506 is an abundant number, since it is smaller than the sum of its proper divisors (85445658).

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

67750506 is a wasteful number, since it uses less digits than its factorization.

67750506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 67750506 is about 8231.0695538308. The cubic root of 67750506 is about 407.6657080089.

The spelling of 67750506 in words is "sixty-seven million, seven hundred fifty thousand, five hundred six".