64248831 has 12 divisors (see below), whose sum is σ = 98263152. Its totient is φ = 40312896.

The previous prime is 64248787. The next prime is 64248841. The reversal of 64248831 is 13884246.

64248831 is a `hidden beast` number, since 642 + 4 + 8 + 8 + 3 + 1 = 666.

It is not a de Polignac number, because 64248831 - 2¹³ = 64240639 is a prime.

It is a super-2 number, since 2×64248831² = 8255824569733122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64248841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209811 + ... + 210116.

It is an arithmetic number, because the mean of its divisors is an integer number (8188596).

Almost surely, 2^64248831 is an apocalyptic number.

64248831 is a deficient number, since it is larger than the sum of its proper divisors (34014321).

64248831 is a wasteful number, since it uses less digits than its factorization.

64248831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419950 (or 419947 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 64248831 is about 8015.5368503925. The cubic root of 64248831 is about 400.5177275231.

The spelling of 64248831 in words is "sixty-four million, two hundred forty-eight thousand, eight hundred thirty-one".