1626266 has 4 divisors (see below), whose sum is σ = 2439402. Its totient is φ = 813132.

The previous prime is 1626263. The next prime is 1626269. The reversal of 1626266 is 6626261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6626261 = 281 ⋅23581.

It is an interprime number because it is at equal distance from previous prime (1626263) and next prime (1626269).

It can be written as a sum of positive squares in only one way, i.e., 1371241 + 255025 = 1171^2 + 505^2 .

It is a super-2 number, since 2×1626266² = 5289482205512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1626263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406565 + ... + 406568.

2^1626266 is an apocalyptic number.

1626266 is a deficient number, since it is larger than the sum of its proper divisors (813136).

1626266 is an equidigital number, since it uses as much as digits as its factorization.

1626266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813135.

The product of its digits is 5184, while the sum is 29.

The square root of 1626266 is about 1275.2513477742. The cubic root of 1626266 is about 117.5972576373.

The spelling of 1626266 in words is "one million, six hundred twenty-six thousand, two hundred sixty-six".