149866564 has 9 divisors (see below), whose sum is σ = 262309341. Its totient is φ = 74921040.

The previous prime is 149866559. The next prime is 149866571. The reversal of 149866564 is 465668941.

The square root of 149866564 is 12242.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 132710400 = 4142^2 + 11520^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21424 + ... + 27544.

Almost surely, 2^149866564 is an apocalyptic number.

149866564 is the 12242-nd square number.

It is an amenable number.

149866564 is a deficient number, since it is larger than the sum of its proper divisors (112442777).

149866564 is an frugal number, since it uses more digits than its factorization.

149866564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246 (or 6123 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The cubic root of 149866564 is about 531.1716857292.

Multiplying 149866564 by its sum of digits (49), we get a square (7343461636 = 85694²).

The spelling of 149866564 in words is "one hundred forty-nine million, eight hundred sixty-six thousand, five hundred sixty-four".