678213995 has 32 divisors (see below), whose sum is σ = 873400320. Its totient is φ = 504380800.

The previous prime is 678213989. The next prime is 678214003. The reversal of 678213995 is 599312876.

It is not a de Polignac number, because 678213995 - 2²² = 674019691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967145 + ... + 967845.

It is an arithmetic number, because the mean of its divisors is an integer number (27293760).

Almost surely, 2^678213995 is an apocalyptic number.

678213995 is a deficient number, since it is larger than the sum of its proper divisors (195186325).

678213995 is a wasteful number, since it uses less digits than its factorization.

678213995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its digits is 816480, while the sum is 50.

The square root of 678213995 is about 26042.5420226214. The cubic root of 678213995 is about 878.5953810139.

The spelling of 678213995 in words is "six hundred seventy-eight million, two hundred thirteen thousand, nine hundred ninety-five".