648432307 has 16 divisors (see below), whose sum is σ = 685532160. Its totient is φ = 612126592.

The previous prime is 648432299. The next prime is 648432311. The reversal of 648432307 is 703234846.

It is a happy number.

648432307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 648432307 - 2³ = 648432299 is a prime.

It is a super-2 number, since 2×648432307² = 840928913522684498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648436307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901494 + ... + 902212.

It is an arithmetic number, because the mean of its divisors is an integer number (42845760).

Almost surely, 2^648432307 is an apocalyptic number.

648432307 is a deficient number, since it is larger than the sum of its proper divisors (37099853).

648432307 is a wasteful number, since it uses less digits than its factorization.

648432307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 648432307 is about 25464.3340183874. The cubic root of 648432307 is about 865.5421360065.

The spelling of 648432307 in words is "six hundred forty-eight million, four hundred thirty-two thousand, three hundred seven".