149787564 has 72 divisors (see below), whose sum is σ = 374830848. Its totient is φ = 46539360.

The previous prime is 149787563. The next prime is 149787587. The reversal of 149787564 is 465787941.

It is not an unprimeable number, because it can be changed into a prime (149787563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307329 + ... + 307815.

It is an arithmetic number, because the mean of its divisors is an integer number (5205984).

Almost surely, 2^149787564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149787564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187415424).

149787564 is an abundant number, since it is smaller than the sum of its proper divisors (225043284).

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

149787564 is a wasteful number, since it uses less digits than its factorization.

149787564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 582 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 149787564 is about 12238.7729777131. The cubic root of 149787564 is about 531.0783361576.

The spelling of 149787564 in words is "one hundred forty-nine million, seven hundred eighty-seven thousand, five hundred sixty-four".