690885351 has 18 divisors (see below), whose sum is σ = 1080617928. Its totient is φ = 425159280.

The previous prime is 690885347. The next prime is 690885379. The reversal of 690885351 is 153588096.

690885351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690885351 - 2² = 690885347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690885297 and 690885306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690885331) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 225595 + ... + 228636.

Almost surely, 2^690885351 is an apocalyptic number.

690885351 is a deficient number, since it is larger than the sum of its proper divisors (389732577).

690885351 is a wasteful number, since it uses less digits than its factorization.

690885351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454263 (or 454247 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 690885351 is about 26284.6980389732. The cubic root of 690885351 is about 884.0333753258.

The spelling of 690885351 in words is "six hundred ninety million, eight hundred eighty-five thousand, three hundred fifty-one".