213946641 has 12 divisors (see below), whose sum is σ = 310177920. Its totient is φ = 142103160.

The previous prime is 213946619. The next prime is 213946657. The reversal of 213946641 is 146649312.

213946641 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 4 + 6 + 641 = 666.

It is not a de Polignac number, because 213946641 - 2⁵ = 213946609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213946596 and 213946605.

It is not an unprimeable number, because it can be changed into a prime (213946661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41421 + ... + 46298.

It is an arithmetic number, because the mean of its divisors is an integer number (25848160).

Almost surely, 2^213946641 is an apocalyptic number.

It is an amenable number.

213946641 is a deficient number, since it is larger than the sum of its proper divisors (96231279).

213946641 is a wasteful number, since it uses less digits than its factorization.

213946641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87996 (or 87993 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 213946641 is about 14626.9149515542. The cubic root of 213946641 is about 598.0926850071.

The spelling of 213946641 in words is "two hundred thirteen million, nine hundred forty-six thousand, six hundred forty-one".