66752460 has 72 divisors (see below), whose sum is σ = 203243040. Its totient is φ = 17733888.

The previous prime is 66752459. The next prime is 66752467. The reversal of 66752460 is 6425766.

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

It is not an unprimeable number, because it can be changed into a prime (66752467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64104 + ... + 65136.

It is an arithmetic number, because the mean of its divisors is an integer number (2822820).

Almost surely, 2^66752460 is an apocalyptic number.

66752460 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 66752460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101621520).

66752460 is an abundant number, since it is smaller than the sum of its proper divisors (136490580).

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

66752460 is a wasteful number, since it uses less digits than its factorization.

66752460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66752460 is about 8170.2178673521. The cubic root of 66752460 is about 405.6539959392.

The spelling of 66752460 in words is "sixty-six million, seven hundred fifty-two thousand, four hundred sixty".