1326690 has 24 divisors (see below), whose sum is σ = 3449628. Its totient is φ = 353760.

The previous prime is 1326683. The next prime is 1326691. The reversal of 1326690 is 966231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 74529 = 1119^2 + 273^2 .

It is a super-2 number, since 2×1326690² = 3520212712200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1326691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7281 + ... + 7460.

2^1326690 is an apocalyptic number.

1326690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1326690 is an abundant number, since it is smaller than the sum of its proper divisors (2122938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1326690 is a wasteful number, since it uses less digits than its factorization.

1326690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14754 (or 14751 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1326690 is about 1151.8202984841. The cubic root of 1326690 is about 109.8811388277.

It can be divided in two parts, 1326 and 690, that added together give a triangular number (2016 = T₆₃).

The spelling of 1326690 in words is "one million, three hundred twenty-six thousand, six hundred ninety".