70812189 has 24 divisors (see below), whose sum is σ = 117229632. Its totient is φ = 40348800.

The previous prime is 70812179. The next prime is 70812199. The reversal of 70812189 is 98121807.

It is an interprime number because it is at equal distance from previous prime (70812179) and next prime (70812199).

It is not a de Polignac number, because 70812189 - 2⁷ = 70812061 is a prime.

It is a super-2 number, since 2×70812189² = 10028732221943442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70812109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23862 + ... + 26664.

It is an arithmetic number, because the mean of its divisors is an integer number (4884568).

Almost surely, 2^70812189 is an apocalyptic number.

It is an amenable number.

70812189 is a deficient number, since it is larger than the sum of its proper divisors (46417443).

70812189 is a wasteful number, since it uses less digits than its factorization.

70812189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217 (or 3214 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 70812189 is about 8414.9978609623. The cubic root of 70812189 is about 413.7163393298.

Adding to 70812189 its sum of digits (36), we get a square (70812225 = 8415²).

The spelling of 70812189 in words is "seventy million, eight hundred twelve thousand, one hundred eighty-nine".