66514080 has 48 divisors (see below), whose sum is σ = 209520864. Its totient is φ = 17736960.

The previous prime is 66514069. The next prime is 66514087. The reversal of 66514080 is 8041566.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (66514087) 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, 68806 + ... + 69765.

It is an arithmetic number, because the mean of its divisors is an integer number (4365018).

Almost surely, 2^66514080 is an apocalyptic number.

66514080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66514080 is an abundant number, since it is smaller than the sum of its proper divisors (143006784).

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

66514080 is a wasteful number, since it uses less digits than its factorization.

66514080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138589 (or 138581 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 66514080 is about 8155.6164696484. The cubic root of 66514080 is about 405.1705424114.

It can be divided in two parts, 6651 and 4080, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 66514080 in words is "sixty-six million, five hundred fourteen thousand, eighty".