64654261 has 16 divisors (see below), whose sum is σ = 75245184. Its totient is φ = 54411264.

The previous prime is 64654243. The next prime is 64654297. The reversal of 64654261 is 16245646.

It is a cyclic number.

It is not a de Polignac number, because 64654261 - 2¹³ = 64646069 is a prime.

It is a super-2 number, since 2×64654261² = 8360346930912242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64654201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149101 + ... + 149533.

It is an arithmetic number, because the mean of its divisors is an integer number (4702824).

Almost surely, 2^64654261 is an apocalyptic number.

It is an amenable number.

64654261 is a deficient number, since it is larger than the sum of its proper divisors (10590923).

64654261 is a wasteful number, since it uses less digits than its factorization.

64654261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 34560, while the sum is 34.

The square root of 64654261 is about 8040.7873370709. The cubic root of 64654261 is about 401.3584252299.

The spelling of 64654261 in words is "sixty-four million, six hundred fifty-four thousand, two hundred sixty-one".