812201064 has 32 divisors (see below), whose sum is σ = 2032845120. Its totient is φ = 270421376.

The previous prime is 812201063. The next prime is 812201077. The reversal of 812201064 is 460102218.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (812201063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2212 + ... + 40364.

It is an arithmetic number, because the mean of its divisors is an integer number (63526410).

Almost surely, 2^812201064 is an apocalyptic number.

It is an amenable number.

812201064 is an abundant number, since it is smaller than the sum of its proper divisors (1220644056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812201064 is a wasteful number, since it uses less digits than its factorization.

812201064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39049 (or 39045 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 812201064 is about 28499.1414607528. The cubic root of 812201064 is about 933.0133359917.

The spelling of 812201064 in words is "eight hundred twelve million, two hundred one thousand, sixty-four".