4866623021 has 4 divisors (see below), whose sum is σ = 5240978652. Its totient is φ = 4492267392.

The previous prime is 4866622979. The next prime is 4866623033. The reversal of 4866623021 is 1203266684.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3206956900 + 1659666121 = 56630^2 + 40739^2 .

It is a cyclic number.

It is not a de Polignac number, because 4866623021 - 2²² = 4862428717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4866628021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187177796 + ... + 187177821.

It is an arithmetic number, because the mean of its divisors is an integer number (1310244663).

Almost surely, 2^4866623021 is an apocalyptic number.

It is an amenable number.

4866623021 is a deficient number, since it is larger than the sum of its proper divisors (374355631).

4866623021 is a wasteful number, since it uses less digits than its factorization.

4866623021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374355630.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 4866623021 is about 69761.1856335599. The cubic root of 4866623021 is about 1694.6339473420.

The spelling of 4866623021 in words is "four billion, eight hundred sixty-six million, six hundred twenty-three thousand, twenty-one".