667299949680 has 240 divisors, whose sum is σ = 2591470947744. Its totient is φ = 140792924160.

The previous prime is 667299949663. The next prime is 667299949681. The reversal of 667299949680 is 86949992766.

It is a happy number.

667299949680 is digitally balanced in base 2 and base 4, because in such bases 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 (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667299949681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2029551 + ... + 2335310.

Almost surely, 2^667299949680 is an apocalyptic number.

667299949680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667299949680 is an abundant number, since it is smaller than the sum of its proper divisors (1924170998064).

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

667299949680 is a wasteful number, since it uses less digits than its factorization.

667299949680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364904 (or 4364891 counting only the distinct ones).

The product of its (nonzero) digits is 634894848, while the sum is 75.

The spelling of 667299949680 in words is "six hundred sixty-seven billion, two hundred ninety-nine million, nine hundred forty-nine thousand, six hundred eighty".