145451660 has 48 divisors (see below), whose sum is σ = 324505440. Its totient is φ = 54574080.

The previous prime is 145451639. The next prime is 145451689. The reversal of 145451660 is 66154541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141950 + ... + 142970.

It is an arithmetic number, because the mean of its divisors is an integer number (6760530).

Almost surely, 2^145451660 is an apocalyptic number.

145451660 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 145451660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162252720).

145451660 is an abundant number, since it is smaller than the sum of its proper divisors (179053780).

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

145451660 is a wasteful number, since it uses less digits than its factorization.

145451660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 145451660 is about 12060.3341578913. The cubic root of 145451660 is about 525.9037012816.

The spelling of 145451660 in words is "one hundred forty-five million, four hundred fifty-one thousand, six hundred sixty".