890246745 has 12 divisors (see below), whose sum is σ = 1543094436. Its totient is φ = 474798240.

The previous prime is 890246719. The next prime is 890246761. The reversal of 890246745 is 547642098.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 134931456 + 755315289 = 11616^2 + 27483^2 .

It is not a de Polignac number, because 890246745 - 2⁵ = 890246713 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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: 19783261 = 890246745 / (8 + 9 + 0 + 2 + 4 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 890246745.

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, 9891586 + ... + 9891675.

It is an arithmetic number, because the mean of its divisors is an integer number (128591203).

Almost surely, 2^890246745 is an apocalyptic number.

It is an amenable number.

890246745 is a deficient number, since it is larger than the sum of its proper divisors (652847691).

890246745 is a wasteful number, since it uses less digits than its factorization.

890246745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783272 (or 19783269 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 890246745 is about 29837.0029493580. The cubic root of 890246745 is about 961.9890562996.

The spelling of 890246745 in words is "eight hundred ninety million, two hundred forty-six thousand, seven hundred forty-five".