146666680 has 32 divisors (see below), whose sum is σ = 330472800. Its totient is φ = 58582656.

The previous prime is 146666677. The next prime is 146666687. The reversal of 146666680 is 86666641.

It is a super-2 number, since 2×146666680² = 43022230044444800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146666687) 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, 30949 + ... + 35371.

It is an arithmetic number, because the mean of its divisors is an integer number (10327275).

Almost surely, 2^146666680 is an apocalyptic number.

146666680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146666680 is an abundant number, since it is smaller than the sum of its proper divisors (183806120).

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

146666680 is a wasteful number, since it uses less digits than its factorization.

146666680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263 (or 5259 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 146666680 is about 12110.6019668718. The cubic root of 146666680 is about 527.3640088784.

The spelling of 146666680 in words is "one hundred forty-six million, six hundred sixty-six thousand, six hundred eighty".