816250667 has 2 divisors, whose sum is σ = 816250668. Its totient is φ = 816250666.

The previous prime is 816250661. The next prime is 816250769. The reversal of 816250667 is 766052618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816250667 - 2⁸ = 816250411 is a prime.

It is a super-3 number, since 3×816250667³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (816250661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408125333 + 408125334.

It is an arithmetic number, because the mean of its divisors is an integer number (408125334).

Almost surely, 2^816250667 is an apocalyptic number.

816250667 is a deficient number, since it is larger than the sum of its proper divisors (1).

816250667 is an equidigital number, since it uses as much as digits as its factorization.

816250667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 816250667 is about 28570.1009273681. The cubic root of 816250667 is about 934.5614220370.

The spelling of 816250667 in words is "eight hundred sixteen million, two hundred fifty thousand, six hundred sixty-seven".