213677906 has 8 divisors (see below), whose sum is σ = 345172044. Its totient is φ = 98620560.

The previous prime is 213677903. The next prime is 213677909. The reversal of 213677906 is 609776312.

It is an interprime number because it is at equal distance from previous prime (213677903) and next prime (213677909).

It can be written as a sum of positive squares in 2 ways, for example, as 213422881 + 255025 = 14609^2 + 505^2 .

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

It is not an unprimeable number, because it can be changed into a prime (213677903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4109165 + ... + 4109216.

Almost surely, 2^213677906 is an apocalyptic number.

213677906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

213677906 is a deficient number, since it is larger than the sum of its proper divisors (131494138).

213677906 is a wasteful number, since it uses less digits than its factorization.

213677906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8218396.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 213677906 is about 14617.7257465038. The cubic root of 213677906 is about 597.8421618235.

The spelling of 213677906 in words is "two hundred thirteen million, six hundred seventy-seven thousand, nine hundred six".