1307648685 has 64 divisors (see below), whose sum is σ = 2549145600. Its totient is φ = 559084032.

The previous prime is 1307648651. The next prime is 1307648689. The reversal of 1307648685 is 5868467031.

1307648685 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1307648685 - 2⁶ = 1307648621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307648689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153457 + ... + 161753.

It is an arithmetic number, because the mean of its divisors is an integer number (39830400).

Almost surely, 2^1307648685 is an apocalyptic number.

1307648685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1307648685 is a deficient number, since it is larger than the sum of its proper divisors (1241496915).

1307648685 is a wasteful number, since it uses less digits than its factorization.

1307648685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 1307648685 is about 36161.4253729025. The cubic root of 1307648685 is about 1093.5291400145.

The spelling of 1307648685 in words is "one billion, three hundred seven million, six hundred forty-eight thousand, six hundred eighty-five".