800973621 has 12 divisors (see below), whose sum is σ = 1322242272. Its totient is φ = 457699176.

The previous prime is 800973619. The next prime is 800973623. The reversal of 800973621 is 126379008.

It is an interprime number because it is at equal distance from previous prime (800973619) and next prime (800973623).

It is not a de Polignac number, because 800973621 - 2¹ = 800973619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800973623) 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, 6356871 + ... + 6356996.

It is an arithmetic number, because the mean of its divisors is an integer number (110186856).

Almost surely, 2^800973621 is an apocalyptic number.

It is an amenable number.

800973621 is a deficient number, since it is larger than the sum of its proper divisors (521268651).

800973621 is a wasteful number, since it uses less digits than its factorization.

800973621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12713880 (or 12713877 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 800973621 is about 28301.4773642649. The cubic root of 800973621 is about 928.6942097470.

The spelling of 800973621 in words is "eight hundred million, nine hundred seventy-three thousand, six hundred twenty-one".