690863693 has 8 divisors (see below), whose sum is σ = 783165600. Its totient is φ = 604155888.

The previous prime is 690863689. The next prime is 690863711. The reversal of 690863693 is 396368096.

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 690863693 - 2² = 690863689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690863603) 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, 1398263 + ... + 1398756.

It is an arithmetic number, because the mean of its divisors is an integer number (97895700).

Almost surely, 2^690863693 is an apocalyptic number.

It is an amenable number.

690863693 is a deficient number, since it is larger than the sum of its proper divisors (92301907).

690863693 is a wasteful number, since it uses less digits than its factorization.

690863693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797051.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 690863693 is about 26284.2860469901. The cubic root of 690863693 is about 884.0241376161.

The spelling of 690863693 in words is "six hundred ninety million, eight hundred sixty-three thousand, six hundred ninety-three".