66487068 has 60 divisors (see below), whose sum is σ = 184049712. Its totient is φ = 20856960.

The previous prime is 66487063. The next prime is 66487079. The reversal of 66487068 is 86078466.

It is a happy number.

It is a super-2 number, since 2×66487068² = 8841060422473248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66487063) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 528 + ... + 11543.

Almost surely, 2^66487068 is an apocalyptic number.

66487068 is a gapful number since it is divisible by the number (68) 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 66487068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92024856).

66487068 is an abundant number, since it is smaller than the sum of its proper divisors (117562644).

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

66487068 is a wasteful number, since it uses less digits than its factorization.

66487068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12104 (or 12093 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 66487068 is about 8153.9602648038. The cubic root of 66487068 is about 405.1156871158.

The spelling of 66487068 in words is "sixty-six million, four hundred eighty-seven thousand, sixty-eight".