146421660 has 192 divisors, whose sum is σ = 524289024. Its totient is φ = 29644800.

The previous prime is 146421659. The next prime is 146421673. The reversal of 146421660 is 66124641.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189034 + ... + 189806.

It is an arithmetic number, because the mean of its divisors is an integer number (2730672).

Almost surely, 2^146421660 is an apocalyptic number.

146421660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146421660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262144512).

146421660 is an abundant number, since it is smaller than the sum of its proper divisors (377867364).

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

146421660 is a wasteful number, since it uses less digits than its factorization.

146421660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 146421660 is about 12100.4818085893. The cubic root of 146421660 is about 527.0701753795.

The spelling of 146421660 in words is "one hundred forty-six million, four hundred twenty-one thousand, six hundred sixty".