64538554 has 16 divisors (see below), whose sum is σ = 103428000. Its totient is φ = 30113424.

The previous prime is 64538531. The next prime is 64538557. The reversal of 64538554 is 45583546.

It is not an unprimeable number, because it can be changed into a prime (64538557) 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, 10129 + ... + 15220.

It is an arithmetic number, because the mean of its divisors is an integer number (6464250).

Almost surely, 2^64538554 is an apocalyptic number.

64538554 is a deficient number, since it is larger than the sum of its proper divisors (38889446).

64538554 is a wasteful number, since it uses less digits than its factorization.

64538554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25437.

The product of its digits is 288000, while the sum is 40.

The square root of 64538554 is about 8033.5891107275. The cubic root of 64538554 is about 401.1188549908.

The spelling of 64538554 in words is "sixty-four million, five hundred thirty-eight thousand, five hundred fifty-four".