145990064 has 40 divisors (see below), whose sum is σ = 310480128. Its totient is φ = 65948480.

The previous prime is 145990063. The next prime is 145990069. The reversal of 145990064 is 460099541.

It is not an unprimeable number, because it can be changed into a prime (145990063) 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, 26909 + ... + 31875.

Almost surely, 2^145990064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145990064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155240064).

145990064 is an abundant number, since it is smaller than the sum of its proper divisors (164490064).

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

145990064 is a wasteful number, since it uses less digits than its factorization.

145990064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 145990064 is about 12082.6348119936. The cubic root of 145990064 is about 526.5517974837.

The spelling of 145990064 in words is "one hundred forty-five million, nine hundred ninety thousand, sixty-four".