649612283 has 2 divisors, whose sum is σ = 649612284. Its totient is φ = 649612282.

The previous prime is 649612237. The next prime is 649612289. The reversal of 649612283 is 382216946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649612283 is a prime.

It is a super-2 number, since 2×649612283² = 843992236448944178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 649612283.

It is not a weakly prime, because it can be changed into another prime (649612289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324806141 + 324806142.

It is an arithmetic number, because the mean of its divisors is an integer number (324806142).

Almost surely, 2^649612283 is an apocalyptic number.

649612283 is a deficient number, since it is larger than the sum of its proper divisors (1).

649612283 is an equidigital number, since it uses as much as digits as its factorization.

649612283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 649612283 is about 25487.4926777822. The cubic root of 649612283 is about 866.0668374295.

The spelling of 649612283 in words is "six hundred forty-nine million, six hundred twelve thousand, two hundred eighty-three".