812900067 has 32 divisors (see below), whose sum is σ = 1316275200. Its totient is φ = 437134464.

The previous prime is 812900051. The next prime is 812900107. The reversal of 812900067 is 760009218.

It is not a de Polignac number, because 812900067 - 2⁴ = 812900051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812900267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99234 + ... + 107112.

It is an arithmetic number, because the mean of its divisors is an integer number (41133600).

Almost surely, 2^812900067 is an apocalyptic number.

812900067 is a deficient number, since it is larger than the sum of its proper divisors (503375133).

812900067 is an equidigital number, since it uses as much as digits as its factorization.

812900067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940 (or 7906 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 812900067 is about 28511.4024032491. The cubic root of 812900067 is about 933.2809183859.

The spelling of 812900067 in words is "eight hundred twelve million, nine hundred thousand, sixty-seven".