823530970 has 32 divisors (see below), whose sum is σ = 1511571600. Its totient is φ = 322983936.

The previous prime is 823530943. The next prime is 823530971. The reversal of 823530970 is 79035328.

It can be written as a sum of positive squares in 8 ways, for example, as 453391849 + 370139121 = 21293^2 + 19239^2 .

It is not an unprimeable number, because it can be changed into a prime (823530971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101836 + ... + 109624.

Almost surely, 2^823530970 is an apocalyptic number.

823530970 is a deficient number, since it is larger than the sum of its proper divisors (688040630).

823530970 is a wasteful number, since it uses less digits than its factorization.

823530970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 823530970 is about 28697.2293087678. The cubic root of 823530970 is about 937.3317154534.

The spelling of 823530970 in words is "eight hundred twenty-three million, five hundred thirty thousand, nine hundred seventy".