66493080 has 48 divisors (see below), whose sum is σ = 216103680. Its totient is φ = 17731392.

The previous prime is 66493061. The next prime is 66493099. The reversal of 66493080 is 8039466.

66493080 is a `hidden beast` number, since 6 + 649 + 3 + 0 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (66493061) and next prime (66493099).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91992 + ... + 92711.

It is an arithmetic number, because the mean of its divisors is an integer number (4502160).

Almost surely, 2^66493080 is an apocalyptic number.

66493080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66493080 is an abundant number, since it is smaller than the sum of its proper divisors (149610600).

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

66493080 is a wasteful number, since it uses less digits than its factorization.

66493080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184720 (or 184713 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 66493080 is about 8154.3289116886. The cubic root of 66493080 is about 405.1278974206.

The spelling of 66493080 in words is "sixty-six million, four hundred ninety-three thousand, eighty".