890970345 has 12 divisors (see below), whose sum is σ = 1544348676. Its totient is φ = 475184160.

The previous prime is 890970341. The next prime is 890970361. The reversal of 890970345 is 543079098.

It can be written as a sum of positive squares in 2 ways, for example, as 349989264 + 540981081 = 18708^2 + 23259^2 .

It is not a de Polignac number, because 890970345 - 2² = 890970341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19799341 = 890970345 / (8 + 9 + 0 + 9 + 7 + 0 + 3 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 890970345.

It is not an unprimeable number, because it can be changed into a prime (890970341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9899626 + ... + 9899715.

It is an arithmetic number, because the mean of its divisors is an integer number (128695723).

Almost surely, 2^890970345 is an apocalyptic number.

It is an amenable number.

890970345 is a deficient number, since it is larger than the sum of its proper divisors (653378331).

890970345 is a wasteful number, since it uses less digits than its factorization.

890970345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799352 (or 19799349 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 890970345 is about 29849.1263691251. The cubic root of 890970345 is about 962.2496232989.

The spelling of 890970345 in words is "eight hundred ninety million, nine hundred seventy thousand, three hundred forty-five".