812498645 has 12 divisors (see below), whose sum is σ = 1134182124. Its totient is φ = 557141760.

The previous prime is 812498633. The next prime is 812498657. The reversal of 812498645 is 546894218.

It is an interprime number because it is at equal distance from previous prime (812498633) and next prime (812498657).

It can be written as a sum of positive squares in 2 ways, for example, as 221473924 + 591024721 = 14882^2 + 24311^2 .

It is not a de Polignac number, because 812498645 - 2²⁴ = 795721429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 812498645.

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, 1657916 + ... + 1658405.

It is an arithmetic number, because the mean of its divisors is an integer number (94515177).

Almost surely, 2^812498645 is an apocalyptic number.

It is an amenable number.

812498645 is a deficient number, since it is larger than the sum of its proper divisors (321683479).

812498645 is a wasteful number, since it uses less digits than its factorization.

812498645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316340 (or 3316333 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 812498645 is about 28504.3618591962. The cubic root of 812498645 is about 933.1272704807.

The spelling of 812498645 in words is "eight hundred twelve million, four hundred ninety-eight thousand, six hundred forty-five".