649860283 has 2 divisors, whose sum is σ = 649860284. Its totient is φ = 649860282.

The previous prime is 649860271. The next prime is 649860307. The reversal of 649860283 is 382068946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649860283 - 2¹⁷ = 649729211 is a prime.

It is not a weakly prime, because it can be changed into another prime (649860383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324930141 + 324930142.

It is an arithmetic number, because the mean of its divisors is an integer number (324930142).

Almost surely, 2^649860283 is an apocalyptic number.

649860283 is a deficient number, since it is larger than the sum of its proper divisors (1).

649860283 is an equidigital number, since it uses as much as digits as its factorization.

649860283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 649860283 is about 25492.3573448985. The cubic root of 649860283 is about 866.1770350836.

The spelling of 649860283 in words is "six hundred forty-nine million, eight hundred sixty thousand, two hundred eighty-three".