283998661 has 2 divisors, whose sum is σ = 283998662. Its totient is φ = 283998660.

The previous prime is 283998647. The next prime is 283998667. The reversal of 283998661 is 166899382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271260900 + 12737761 = 16470^2 + 3569^2 .

It is a cyclic number.

It is not a de Polignac number, because 283998661 - 2²³ = 275610053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 283998599 and 283998608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283998667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141999330 + 141999331.

It is an arithmetic number, because the mean of its divisors is an integer number (141999331).

Almost surely, 2^283998661 is an apocalyptic number.

It is an amenable number.

283998661 is a deficient number, since it is larger than the sum of its proper divisors (1).

283998661 is an equidigital number, since it uses as much as digits as its factorization.

283998661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 283998661 is about 16852.2598187899. The cubic root of 283998661 is about 657.3128121106.

The spelling of 283998661 in words is "two hundred eighty-three million, nine hundred ninety-eight thousand, six hundred sixty-one".