890020671 has 4 divisors (see below), whose sum is σ = 1186694232. Its totient is φ = 593347112.

The previous prime is 890020619. The next prime is 890020693. The reversal of 890020671 is 176020098.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 890020671 - 2¹³ = 890012479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890022671) 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, 148336776 + ... + 148336781.

It is an arithmetic number, because the mean of its divisors is an integer number (296673558).

Almost surely, 2^890020671 is an apocalyptic number.

890020671 is a deficient number, since it is larger than the sum of its proper divisors (296673561).

890020671 is a wasteful number, since it uses less digits than its factorization.

890020671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296673560.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 890020671 is about 29833.2142250881. The cubic root of 890020671 is about 961.9076185307.

The spelling of 890020671 in words is "eight hundred ninety million, twenty thousand, six hundred seventy-one".