667142460 has 48 divisors (see below), whose sum is σ = 2075556000. Its totient is φ = 177904512.

The previous prime is 667142453. The next prime is 667142473. The reversal of 667142460 is 64241766.

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 15 ways as a sum of consecutive naturals, for example, 617185 + ... + 618264.

It is an arithmetic number, because the mean of its divisors is an integer number (43240750).

Almost surely, 2^667142460 is an apocalyptic number.

667142460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667142460 is an abundant number, since it is smaller than the sum of its proper divisors (1408413540).

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

667142460 is a wasteful number, since it uses less digits than its factorization.

667142460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235467 (or 1235459 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 667142460 is about 25829.1010296526. The cubic root of 667142460 is about 873.7882371964.

The spelling of 667142460 in words is "six hundred sixty-seven million, one hundred forty-two thousand, four hundred sixty".