64955261 has 8 divisors (see below), whose sum is σ = 76629504. Its totient is φ = 53879760.

The previous prime is 64955251. The next prime is 64955291. The reversal of 64955261 is 16255946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64955261 - 2¹⁰ = 64954237 is a prime.

It is a super-3 number, since 3×64955261³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64955251) 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, 149450 + ... + 149883.

It is an arithmetic number, because the mean of its divisors is an integer number (9578688).

Almost surely, 2^64955261 is an apocalyptic number.

It is an amenable number.

64955261 is a deficient number, since it is larger than the sum of its proper divisors (11674243).

64955261 is a wasteful number, since it uses less digits than its factorization.

64955261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299371.

The product of its digits is 64800, while the sum is 38.

The square root of 64955261 is about 8059.4826757057. The cubic root of 64955261 is about 401.9803068660.

The spelling of 64955261 in words is "sixty-four million, nine hundred fifty-five thousand, two hundred sixty-one".