661361483 has 2 divisors, whose sum is σ = 661361484. Its totient is φ = 661361482.

The previous prime is 661361431. The next prime is 661361537. The reversal of 661361483 is 384163166.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 661361483 - 2¹⁸ = 661099339 is a prime.

It is a super-2 number, since 2×661361483² = 874798022391918578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (661361783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330680741 + 330680742.

It is an arithmetic number, because the mean of its divisors is an integer number (330680742).

Almost surely, 2^661361483 is an apocalyptic number.

661361483 is a deficient number, since it is larger than the sum of its proper divisors (1).

661361483 is an equidigital number, since it uses as much as digits as its factorization.

661361483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 661361483 is about 25716.9493330760. The cubic root of 661361483 is about 871.2570382854.

The spelling of 661361483 in words is "six hundred sixty-one million, three hundred sixty-one thousand, four hundred eighty-three".