693504091 has 8 divisors (see below), whose sum is σ = 792864224. Its totient is φ = 594216000.

The previous prime is 693504089. The next prime is 693504121. The reversal of 693504091 is 190405396.

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

It is not a de Polignac number, because 693504091 - 2¹ = 693504089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 693504091.

It is not an unprimeable number, because it can be changed into a prime (693504041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4501 + ... + 37513.

It is an arithmetic number, because the mean of its divisors is an integer number (99108028).

Almost surely, 2^693504091 is an apocalyptic number.

693504091 is a deficient number, since it is larger than the sum of its proper divisors (99360133).

693504091 is a wasteful number, since it uses less digits than its factorization.

693504091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36021.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 693504091 is about 26334.4658385166. The cubic root of 693504091 is about 885.1489172411.

It can be divided in two parts, 69350 and 4091, that added together give a square (73441 = 271²).

The spelling of 693504091 in words is "six hundred ninety-three million, five hundred four thousand, ninety-one".