187740564 has 24 divisors (see below), whose sum is σ = 477885408. Its totient is φ = 56891040.

The previous prime is 187740547. The next prime is 187740569. The reversal of 187740564 is 465047781.

187740564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187740569) 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, 711007 + ... + 711270.

It is an arithmetic number, because the mean of its divisors is an integer number (19911892).

Almost surely, 2^187740564 is an apocalyptic number.

It is an amenable number.

187740564 is an abundant number, since it is smaller than the sum of its proper divisors (290144844).

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

187740564 is a wasteful number, since it uses less digits than its factorization.

187740564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422295 (or 1422293 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 187740564 is about 13701.8452771880. The cubic root of 187740564 is about 572.6017962550.

The spelling of 187740564 in words is "one hundred eighty-seven million, seven hundred forty thousand, five hundred sixty-four".