64648471 has 8 divisors (see below), whose sum is σ = 65836064. Its totient is φ = 63465120.

The previous prime is 64648447. The next prime is 64648481. The reversal of 64648471 is 17484646.

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 64648471 - 2⁵ = 64648439 is a prime.

It is a super-3 number, since 3×64648471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64648421) 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, 60286 + ... + 61348.

It is an arithmetic number, because the mean of its divisors is an integer number (8229508).

Almost surely, 2^64648471 is an apocalyptic number.

64648471 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

64648471 is a deficient number, since it is larger than the sum of its proper divisors (1187593).

64648471 is a wasteful number, since it uses less digits than its factorization.

64648471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its digits is 129024, while the sum is 40.

The square root of 64648471 is about 8040.4272896408. The cubic root of 64648471 is about 401.3464438868.

The spelling of 64648471 in words is "sixty-four million, six hundred forty-eight thousand, four hundred seventy-one".