213677967 has 4 divisors (see below), whose sum is σ = 284903960. Its totient is φ = 142451976.

The previous prime is 213677963. The next prime is 213677977. The reversal of 213677967 is 769776312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213677967 - 2² = 213677963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213677963) 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, 35612992 + ... + 35612997.

It is an arithmetic number, because the mean of its divisors is an integer number (71225990).

Almost surely, 2^213677967 is an apocalyptic number.

213677967 is a deficient number, since it is larger than the sum of its proper divisors (71225993).

213677967 is an equidigital number, since it uses as much as digits as its factorization.

213677967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71225992.

The product of its digits is 666792, while the sum is 48.

The square root of 213677967 is about 14617.7278330115. The cubic root of 213677967 is about 597.8422187135.

The spelling of 213677967 in words is "two hundred thirteen million, six hundred seventy-seven thousand, nine hundred sixty-seven".