812010605 has 12 divisors (see below), whose sum is σ = 1133500860. Its totient is φ = 556807104.

The previous prime is 812010541. The next prime is 812010649. The reversal of 812010605 is 506010218.

It can be written as a sum of positive squares in 2 ways, for example, as 315879529 + 496131076 = 17773^2 + 22274^2 .

It is not a de Polignac number, because 812010605 - 2⁶ = 812010541 is a prime.

It is a super-2 number, since 2×812010605² = 1318722445264932050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1656920 + ... + 1657409.

It is an arithmetic number, because the mean of its divisors is an integer number (94458405).

Almost surely, 2^812010605 is an apocalyptic number.

It is an amenable number.

812010605 is a deficient number, since it is larger than the sum of its proper divisors (321490255).

812010605 is a wasteful number, since it uses less digits than its factorization.

812010605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314348 (or 3314341 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 812010605 is about 28495.7997782129. The cubic root of 812010605 is about 932.9404005710.

The spelling of 812010605 in words is "eight hundred twelve million, ten thousand, six hundred five".