1258966 has 4 divisors (see below), whose sum is σ = 1888452. Its totient is φ = 629482.

The previous prime is 1258937. The next prime is 1258967. The reversal of 1258966 is 6698521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6698521 = 107 ⋅62603.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314740 + ... + 314743.

It is an arithmetic number, because the mean of its divisors is an integer number (472113).

2^1258966 is an apocalyptic number.

1258966 is a deficient number, since it is larger than the sum of its proper divisors (629486).

1258966 is an equidigital number, since it uses as much as digits as its factorization.

1258966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629485.

The product of its digits is 25920, while the sum is 37.

The square root of 1258966 is about 1122.0365412944. The cubic root of 1258966 is about 107.9786766316.

The spelling of 1258966 in words is "one million, two hundred fifty-eight thousand, nine hundred sixty-six".