1626361 has 6 divisors (see below), whose sum is σ = 1787786. Its totient is φ = 1478400.

The previous prime is 1626337. The next prime is 1626371. The reversal of 1626361 is 1636261.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 511225 = 1056^2 + 715^2 .

It is not a de Polignac number, because 1626361 - 2⁵ = 1626329 is a prime.

1626361 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6600 + ... + 6841.

2^1626361 is an apocalyptic number.

1626361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1626361 is a deficient number, since it is larger than the sum of its proper divisors (161425).

1626361 is a wasteful number, since it uses less digits than its factorization.

1626361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13463 (or 13452 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 1626361 is about 1275.2885947894. The cubic root of 1626361 is about 117.5995474476.

It can be divided in two parts, 1626 and 361, that multiplied together give a triangular number (586986 = T₁₀₈₃).

The spelling of 1626361 in words is "one million, six hundred twenty-six thousand, three hundred sixty-one".