890720683 has 4 divisors (see below), whose sum is σ = 891098728. Its totient is φ = 890342640.

The previous prime is 890720681. The next prime is 890720693. The reversal of 890720683 is 386027098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386027098 = 2 ⋅193013549.

It is a cyclic number.

It is not a de Polignac number, because 890720683 - 2¹ = 890720681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890720681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185466 + ... + 190207.

It is an arithmetic number, because the mean of its divisors is an integer number (222774682).

Almost surely, 2^890720683 is an apocalyptic number.

890720683 is a deficient number, since it is larger than the sum of its proper divisors (378045).

890720683 is a wasteful number, since it uses less digits than its factorization.

890720683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378044.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 890720683 is about 29844.9440106695. The cubic root of 890720683 is about 962.1597364283.

The spelling of 890720683 in words is "eight hundred ninety million, seven hundred twenty thousand, six hundred eighty-three".