4640578421 has 8 divisors (see below), whose sum is σ = 4745856000. Its totient is φ = 4536464400.

The previous prime is 4640578409. The next prime is 4640578427. The reversal of 4640578421 is 1248750464.

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

It is not a de Polignac number, because 4640578421 - 2¹⁴ = 4640562037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640578427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282821 + ... + 298778.

It is an arithmetic number, because the mean of its divisors is an integer number (593232000).

Almost surely, 2^4640578421 is an apocalyptic number.

It is an amenable number.

4640578421 is a deficient number, since it is larger than the sum of its proper divisors (105277579).

4640578421 is a wasteful number, since it uses less digits than its factorization.

4640578421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581779.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 4640578421 is about 68121.7910877276. The cubic root of 4640578421 is about 1667.9794872608.

The spelling of 4640578421 in words is "four billion, six hundred forty million, five hundred seventy-eight thousand, four hundred twenty-one".