1297630 has 8 divisors (see below), whose sum is σ = 2335752. Its totient is φ = 519048.

The previous prime is 1297619. The next prime is 1297631. The reversal of 1297630 is 367921.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64872 + ... + 64891.

It is an arithmetic number, because the mean of its divisors is an integer number (291969).

2^1297630 is an apocalyptic number.

1297630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1297630 is a deficient number, since it is larger than the sum of its proper divisors (1038122).

1297630 is a wasteful number, since it uses less digits than its factorization.

1297630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129770.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1297630 is about 1139.1356372268. The cubic root of 1297630 is about 109.0729248552.

The spelling of 1297630 in words is "one million, two hundred ninety-seven thousand, six hundred thirty".