1297673568 has 48 divisors (see below), whose sum is σ = 3784883760. Its totient is φ = 432557568.

The previous prime is 1297673551. The next prime is 1297673569. The reversal of 1297673568 is 8653767921.

1297673568 is a `hidden beast` number, since 1 + 2 + 9 + 7 + 6 + 73 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297673569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750105 + ... + 751832.

It is an arithmetic number, because the mean of its divisors is an integer number (78851745).

Almost surely, 2^1297673568 is an apocalyptic number.

1297673568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1297673568 is an abundant number, since it is smaller than the sum of its proper divisors (2487210192).

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

1297673568 is a wasteful number, since it uses less digits than its factorization.

1297673568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501956 (or 1501942 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 1297673568 is about 36023.2365009031. The cubic root of 1297673568 is about 1090.7414555142.

The spelling of 1297673568 in words is "one billion, two hundred ninety-seven million, six hundred seventy-three thousand, five hundred sixty-eight".