812672197 has 8 divisors (see below), whose sum is σ = 821567840. Its totient is φ = 803824560.

The previous prime is 812672149. The next prime is 812672221. The reversal of 812672197 is 791276218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 812672197 - 2¹¹ = 812670149 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 (812672117) 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, 22579 + ... + 46207.

It is an arithmetic number, because the mean of its divisors is an integer number (102695980).

Almost surely, 2^812672197 is an apocalyptic number.

It is an amenable number.

812672197 is a deficient number, since it is larger than the sum of its proper divisors (8895643).

812672197 is a wasteful number, since it uses less digits than its factorization.

812672197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24003.

The product of its digits is 84672, while the sum is 43.

The square root of 812672197 is about 28507.4060026513. The cubic root of 812672197 is about 933.1937052888.

The spelling of 812672197 in words is "eight hundred twelve million, six hundred seventy-two thousand, one hundred ninety-seven".