1306297646 has 16 divisors (see below), whose sum is σ = 2075743584. Its totient is φ = 614421504.

The previous prime is 1306297631. The next prime is 1306297667. The reversal of 1306297646 is 6467926031.

It is a junction number, because it is equal to n+sod(n) for n = 1306297597 and 1306297606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68831 + ... + 85733.

It is an arithmetic number, because the mean of its divisors is an integer number (129733974).

Almost surely, 2^1306297646 is an apocalyptic number.

1306297646 is a deficient number, since it is larger than the sum of its proper divisors (769445938).

1306297646 is a wasteful number, since it uses less digits than its factorization.

1306297646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19195.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 1306297646 is about 36142.7398795387. The cubic root of 1306297646 is about 1093.1524053882.

The spelling of 1306297646 in words is "one billion, three hundred six million, two hundred ninety-seven thousand, six hundred forty-six".