145661346 has 48 divisors (see below), whose sum is σ = 331209216. Its totient is φ = 46176768.

The previous prime is 145661333. The next prime is 145661363. The reversal of 145661346 is 643166541.

It is a happy number.

145661346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 145661346.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78991 + ... + 80813.

It is an arithmetic number, because the mean of its divisors is an integer number (6900192).

Almost surely, 2^145661346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145661346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165604608).

145661346 is an abundant number, since it is smaller than the sum of its proper divisors (185547870).

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

145661346 is a wasteful number, since it uses less digits than its factorization.

145661346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2044 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 145661346 is about 12069.0242356207. The cubic root of 145661346 is about 526.1562976758.

The spelling of 145661346 in words is "one hundred forty-five million, six hundred sixty-one thousand, three hundred forty-six".