667463280 has 80 divisors (see below), whose sum is σ = 2257248384. Its totient is φ = 161808640.

The previous prime is 667463273. The next prime is 667463311. The reversal of 667463280 is 82364766.

667463280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123774 + ... + 129053.

Almost surely, 2^667463280 is an apocalyptic number.

667463280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667463280 is an abundant number, since it is smaller than the sum of its proper divisors (1589785104).

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

667463280 is a wasteful number, since it uses less digits than its factorization.

667463280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252854 (or 252848 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 667463280 is about 25835.3107200204. The cubic root of 667463280 is about 873.9282791592.

The spelling of 667463280 in words is "six hundred sixty-seven million, four hundred sixty-three thousand, two hundred eighty".