1307672505 has 40 divisors (see below), whose sum is σ = 2347718472. Its totient is φ = 696356352.

The previous prime is 1307672497. The next prime is 1307672591. The reversal of 1307672505 is 5052767031.

1307672505 is a `hidden beast` number, since 13 + 0 + 76 + 72 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 121352256 + 1186320249 = 11016^2 + 34443^2 .

It is not a de Polignac number, because 1307672505 - 2³ = 1307672497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1307672505.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 310977 + ... + 315153.

Almost surely, 2^1307672505 is an apocalyptic number.

1307672505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1307672505 is a deficient number, since it is larger than the sum of its proper divisors (1040045967).

1307672505 is an equidigital number, since it uses as much as digits as its factorization.

1307672505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967 (or 4958 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 1307672505 is about 36161.7547278890. The cubic root of 1307672505 is about 1093.5357798473.

The spelling of 1307672505 in words is "one billion, three hundred seven million, six hundred seventy-two thousand, five hundred five".