145844661 has 8 divisors (see below), whose sum is σ = 194572224. Its totient is φ = 97173440.

The previous prime is 145844659. The next prime is 145844669. The reversal of 145844661 is 166448541.

145844661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145844661 - 2¹ = 145844659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145844669) 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, 7620 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (24321528).

Almost surely, 2^145844661 is an apocalyptic number.

It is an amenable number.

145844661 is a deficient number, since it is larger than the sum of its proper divisors (48727563).

145844661 is a wasteful number, since it uses less digits than its factorization.

145844661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28171.

The product of its digits is 92160, while the sum is 39.

The square root of 145844661 is about 12076.6162893420. The cubic root of 145844661 is about 526.3769279501.

The spelling of 145844661 in words is "one hundred forty-five million, eight hundred forty-four thousand, six hundred sixty-one".