149661577 has 8 divisors (see below), whose sum is σ = 161504000. Its totient is φ = 137866320.

The previous prime is 149661571. The next prime is 149661581. The reversal of 149661577 is 775166941.

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 149661577 - 2¹¹ = 149659529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149661571) 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, 5049 + ... + 18022.

It is an arithmetic number, because the mean of its divisors is an integer number (20188000).

Almost surely, 2^149661577 is an apocalyptic number.

It is an amenable number.

149661577 is a deficient number, since it is larger than the sum of its proper divisors (11842423).

149661577 is a wasteful number, since it uses less digits than its factorization.

149661577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23583.

The product of its digits is 317520, while the sum is 46.

The square root of 149661577 is about 12233.6248512042. The cubic root of 149661577 is about 530.9293969255.

The spelling of 149661577 in words is "one hundred forty-nine million, six hundred sixty-one thousand, five hundred seventy-seven".