200651639 has 2 divisors, whose sum is σ = 200651640. Its totient is φ = 200651638.

The previous prime is 200651599. The next prime is 200651651. The reversal of 200651639 is 936156002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200651639 - 2¹⁶ = 200586103 is a prime.

It is a super-2 number, since 2×200651639² = 80522160466772642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200651239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100325819 + 100325820.

It is an arithmetic number, because the mean of its divisors is an integer number (100325820).

Almost surely, 2^200651639 is an apocalyptic number.

200651639 is a deficient number, since it is larger than the sum of its proper divisors (1).

200651639 is an equidigital number, since it uses as much as digits as its factorization.

200651639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 200651639 is about 14165.1558057086. The cubic root of 200651639 is about 585.4379937559.

The spelling of 200651639 in words is "two hundred million, six hundred fifty-one thousand, six hundred thirty-nine".