64248621 has 8 divisors (see below), whose sum is σ = 85880064. Its totient is φ = 42724800.

The previous prime is 64248617. The next prime is 64248623. The reversal of 64248621 is 12684246.

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

It is not a de Polignac number, because 64248621 - 2² = 64248617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64248623) 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, 25501 + ... + 27906.

It is an arithmetic number, because the mean of its divisors is an integer number (10735008).

Almost surely, 2^64248621 is an apocalyptic number.

It is an amenable number.

64248621 is a deficient number, since it is larger than the sum of its proper divisors (21631443).

64248621 is a wasteful number, since it uses less digits than its factorization.

64248621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53811.

The product of its digits is 18432, while the sum is 33.

The square root of 64248621 is about 8015.5237508225. The cubic root of 64248621 is about 400.5172911529.

The spelling of 64248621 in words is "sixty-four million, two hundred forty-eight thousand, six hundred twenty-one".