817032945 has 8 divisors (see below), whose sum is σ = 1307252736. Its totient is φ = 435750896.

The previous prime is 817032941. The next prime is 817032949. The reversal of 817032945 is 549230718.

It is an interprime number because it is at equal distance from previous prime (817032941) and next prime (817032949).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 817032945 - 2² = 817032941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (817032941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27234417 + ... + 27234446.

It is an arithmetic number, because the mean of its divisors is an integer number (163406592).

Almost surely, 2^817032945 is an apocalyptic number.

It is an amenable number.

817032945 is a deficient number, since it is larger than the sum of its proper divisors (490219791).

817032945 is a wasteful number, since it uses less digits than its factorization.

817032945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54468871.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 817032945 is about 28583.7881499286. The cubic root of 817032945 is about 934.8598815834.

It can be divided in two parts, 81703 and 2945, that added together give a palindrome (84648).

The spelling of 817032945 in words is "eight hundred seventeen million, thirty-two thousand, nine hundred forty-five".