707666421 has 16 divisors (see below), whose sum is σ = 1176380928. Its totient is φ = 367618800.

The previous prime is 707666389. The next prime is 707666447. The reversal of 707666421 is 124666707.

707666421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 707666421 - 2⁵ = 707666389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 707666421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (707666471) 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, 1531515 + ... + 1531976.

It is an arithmetic number, because the mean of its divisors is an integer number (73523808).

Almost surely, 2^707666421 is an apocalyptic number.

It is an amenable number.

707666421 is a deficient number, since it is larger than the sum of its proper divisors (468714507).

707666421 is a wasteful number, since it uses less digits than its factorization.

707666421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063512.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 707666421 is about 26602.0003195248. Note that the first 3 decimals coincide. The cubic root of 707666421 is about 891.1336901555.

The spelling of 707666421 in words is "seven hundred seven million, six hundred sixty-six thousand, four hundred twenty-one".