64653081 has 8 divisors (see below), whose sum is σ = 86430720. Its totient is φ = 42988752.

The previous prime is 64653079. The next prime is 64653103. The reversal of 64653081 is 18035646.

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

It is not a de Polignac number, because 64653081 - 2¹ = 64653079 is a prime.

It is a super-2 number, since 2×64653081² = 8360041765585122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64653781) 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, 26986 + ... + 29283.

It is an arithmetic number, because the mean of its divisors is an integer number (10803840).

Almost surely, 2^64653081 is an apocalyptic number.

It is an amenable number.

64653081 is a deficient number, since it is larger than the sum of its proper divisors (21777639).

64653081 is a wasteful number, since it uses less digits than its factorization.

64653081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56655.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 64653081 is about 8040.7139608371. The cubic root of 64653081 is about 401.3559834943.

The spelling of 64653081 in words is "sixty-four million, six hundred fifty-three thousand, eighty-one".