1307664261 has 24 divisors (see below), whose sum is σ = 1900953600. Its totient is φ = 866210976.

The previous prime is 1307664229. The next prime is 1307664277. The reversal of 1307664261 is 1624667031.

It is a happy number.

1307664261 is a `hidden beast` number, since 1 + 3 + 0 + 7 + 6 + 642 + 6 + 1 = 666.

It is not a de Polignac number, because 1307664261 - 2⁵ = 1307664229 is a prime.

It is a super-2 number, since 2×1307664261² = 3419971638993352242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307664161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1202460 + ... + 1203546.

It is an arithmetic number, because the mean of its divisors is an integer number (79206400).

Almost surely, 2^1307664261 is an apocalyptic number.

It is an amenable number.

1307664261 is a deficient number, since it is larger than the sum of its proper divisors (593289339).

1307664261 is a wasteful number, since it uses less digits than its factorization.

1307664261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1307664261 is about 36161.6407398779. The cubic root of 1307664261 is about 1093.5334818387.

The spelling of 1307664261 in words is "one billion, three hundred seven million, six hundred sixty-four thousand, two hundred sixty-one".