216246401 has 8 divisors (see below), whose sum is σ = 247265664. Its totient is φ = 185258880.

The previous prime is 216246397. The next prime is 216246419. The reversal of 216246401 is 104642612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216246401 - 2² = 216246397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216246451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9116 + ... + 22706.

It is an arithmetic number, because the mean of its divisors is an integer number (30908208).

Almost surely, 2^216246401 is an apocalyptic number.

It is an amenable number.

216246401 is a deficient number, since it is larger than the sum of its proper divisors (31019263).

216246401 is a wasteful number, since it uses less digits than its factorization.

216246401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15871.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 216246401 is about 14705.3187996725. The cubic root of 216246401 is about 600.2280623757.

The spelling of 216246401 in words is "two hundred sixteen million, two hundred forty-six thousand, four hundred one".