145163661 has 8 divisors (see below), whose sum is σ = 197203680. Its totient is φ = 94949712.

The previous prime is 145163651. The next prime is 145163723. The reversal of 145163661 is 166361541.

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

It is not a de Polignac number, because 145163661 - 2⁹ = 145163149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145163621) 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, 456331 + ... + 456648.

It is an arithmetic number, because the mean of its divisors is an integer number (24650460).

Almost surely, 2^145163661 is an apocalyptic number.

It is an amenable number.

145163661 is a deficient number, since it is larger than the sum of its proper divisors (52040019).

145163661 is an equidigital number, since it uses as much as digits as its factorization.

145163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913035.

The product of its digits is 12960, while the sum is 33.

The square root of 145163661 is about 12048.3883154553. The cubic root of 145163661 is about 525.5563698149.

The spelling of 145163661 in words is "one hundred forty-five million, one hundred sixty-three thousand, six hundred sixty-one".