690322403 has 8 divisors (see below), whose sum is σ = 704004048. Its totient is φ = 676665184.

The previous prime is 690322379. The next prime is 690322411. The reversal of 690322403 is 304223096.

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 690322403 - 2²² = 686128099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690322433) 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, 57425 + ... + 68397.

It is an arithmetic number, because the mean of its divisors is an integer number (88000506).

Almost surely, 2^690322403 is an apocalyptic number.

690322403 is a deficient number, since it is larger than the sum of its proper divisors (13681645).

690322403 is a wasteful number, since it uses less digits than its factorization.

690322403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12213.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 690322403 is about 26273.9871926588. The cubic root of 690322403 is about 883.7932003820.

Adding to 690322403 its reverse (304223096), we get a palindrome (994545499).

The spelling of 690322403 in words is "six hundred ninety million, three hundred twenty-two thousand, four hundred three".