64828471 has 4 divisors (see below), whose sum is σ = 66919744. Its totient is φ = 62737200.

The previous prime is 64828459. The next prime is 64828483. The reversal of 64828471 is 17482846.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64828459) and next prime (64828483).

It is a cyclic number.

It is not a de Polignac number, because 64828471 - 2⁷ = 64828343 is a prime.

It is a super-3 number, since 3×64828471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64828451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045590 + ... + 1045651.

It is an arithmetic number, because the mean of its divisors is an integer number (16729936).

Almost surely, 2^64828471 is an apocalyptic number.

64828471 is a deficient number, since it is larger than the sum of its proper divisors (2091273).

64828471 is a wasteful number, since it uses less digits than its factorization.

64828471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091272.

The product of its digits is 86016, while the sum is 40.

The square root of 64828471 is about 8051.6129440007. The cubic root of 64828471 is about 401.7185868235.

The spelling of 64828471 in words is "sixty-four million, eight hundred twenty-eight thousand, four hundred seventy-one".