4626686621 has 2 divisors, whose sum is σ = 4626686622. Its totient is φ = 4626686620.

The previous prime is 4626686611. The next prime is 4626686653. The reversal of 4626686621 is 1266866264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3213302596 + 1413384025 = 56686^2 + 37595^2 .

It is a cyclic number.

It is not a de Polignac number, because 4626686621 - 2¹⁰ = 4626685597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4626686611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2313343310 + 2313343311.

It is an arithmetic number, because the mean of its divisors is an integer number (2313343311).

Almost surely, 2^4626686621 is an apocalyptic number.

It is an amenable number.

4626686621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4626686621 is an equidigital number, since it uses as much as digits as its factorization.

4626686621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 4626686621 is about 68019.7516975768. The cubic root of 4626686621 is about 1666.3134307710.

The spelling of 4626686621 in words is "four billion, six hundred twenty-six million, six hundred eighty-six thousand, six hundred twenty-one".