1263490 has 8 divisors (see below), whose sum is σ = 2274300. Its totient is φ = 505392.

The previous prime is 1263487. The next prime is 1263499. The reversal of 1263490 is 943621.

It can be written as a sum of positive squares in 2 ways, for example, as 1172889 + 90601 = 1083^2 + 301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1263499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63165 + ... + 63184.

2^1263490 is an apocalyptic number.

1263490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263490 is a deficient number, since it is larger than the sum of its proper divisors (1010810).

1263490 is a wasteful number, since it uses less digits than its factorization.

1263490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126356.

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

The square root of 1263490 is about 1124.0507105998. The cubic root of 1263490 is about 108.1078597798.

The spelling of 1263490 in words is "one million, two hundred sixty-three thousand, four hundred ninety".