823090970 has 16 divisors (see below), whose sum is σ = 1595530440. Its totient is φ = 303910464.

The previous prime is 823090943. The next prime is 823090979. The reversal of 823090970 is 79090328.

It can be written as a sum of positive squares in 4 ways, for example, as 572597041 + 250493929 = 23929^2 + 15827^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (823090979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3165605 + ... + 3165864.

Almost surely, 2^823090970 is an apocalyptic number.

823090970 is a deficient number, since it is larger than the sum of its proper divisors (772439470).

823090970 is a wasteful number, since it uses less digits than its factorization.

823090970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331489.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 823090970 is about 28689.5620391807. The cubic root of 823090970 is about 937.1647517153.

The spelling of 823090970 in words is "eight hundred twenty-three million, ninety thousand, nine hundred seventy".