64154538 has 64 divisors (see below), whose sum is σ = 166763520. Its totient is φ = 17899056.

The previous prime is 64154537. The next prime is 64154561. The reversal of 64154538 is 83545146.

It is a happy number.

64154538 is a `hidden beast` number, since 641 + 5 + 4 + 5 + 3 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (64154533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14281 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (2605680).

Almost surely, 2^64154538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64154538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83381760).

64154538 is an abundant number, since it is smaller than the sum of its proper divisors (102608982).

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

64154538 is a wasteful number, since it uses less digits than its factorization.

64154538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008 (or 4002 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 64154538 is about 8009.6528014640. The cubic root of 64154538 is about 400.3216953775.

The spelling of 64154538 in words is "sixty-four million, one hundred fifty-four thousand, five hundred thirty-eight".