820960437 has 12 divisors (see below), whose sum is σ = 1203171200. Its totient is φ = 497551560.

The previous prime is 820960381. The next prime is 820960457. The reversal of 820960437 is 734069028.

It is not a de Polignac number, because 820960437 - 2²⁰ = 819911861 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 820960395 and 820960404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820960457) 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, 1130437 + ... + 1131162.

Almost surely, 2^820960437 is an apocalyptic number.

It is an amenable number.

820960437 is a deficient number, since it is larger than the sum of its proper divisors (382210763).

820960437 is a wasteful number, since it uses less digits than its factorization.

820960437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261624 (or 2261613 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 820960437 is about 28652.4071763613. The cubic root of 820960437 is about 936.3554504599.

The spelling of 820960437 in words is "eight hundred twenty million, nine hundred sixty thousand, four hundred thirty-seven".