145516660 has 12 divisors (see below), whose sum is σ = 305585028. Its totient is φ = 58206656.

The previous prime is 145516639. The next prime is 145516661. The reversal of 145516660 is 66615541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97574884 + 47941776 = 9878^2 + 6924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145516661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637897 + ... + 3637936.

It is an arithmetic number, because the mean of its divisors is an integer number (25465419).

Almost surely, 2^145516660 is an apocalyptic number.

145516660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145516660 is an abundant number, since it is smaller than the sum of its proper divisors (160068368).

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

145516660 is a wasteful number, since it uses less digits than its factorization.

145516660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275842 (or 7275840 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 145516660 is about 12063.0286412658. The cubic root of 145516660 is about 525.9820289079.

The spelling of 145516660 in words is "one hundred forty-five million, five hundred sixteen thousand, six hundred sixty".