350666421 has 16 divisors (see below), whose sum is σ = 535180800. Its totient is φ = 200068848.

The previous prime is 350666417. The next prime is 350666423. The reversal of 350666421 is 124666053.

It is not a de Polignac number, because 350666421 - 2² = 350666417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350666423) 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, 1170 + ... + 26508.

It is an arithmetic number, because the mean of its divisors is an integer number (33448800).

Almost surely, 2^350666421 is an apocalyptic number.

It is an amenable number.

350666421 is a deficient number, since it is larger than the sum of its proper divisors (184514379).

350666421 is a wasteful number, since it uses less digits than its factorization.

350666421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26008.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 350666421 is about 18726.0893141093. The cubic root of 350666421 is about 705.1768722762.

The spelling of 350666421 in words is "three hundred fifty million, six hundred sixty-six thousand, four hundred twenty-one".