690471 has 16 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 454104.

The previous prime is 690467. The next prime is 690491. The reversal of 690471 is 174096.

It is not a de Polignac number, because 690471 - 2² = 690467 is a prime.

It is a super-3 number, since 3×690471³ = 987546565846071333, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690471.

It is not an unprimeable number, because it can be changed into a prime (690491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770 + ... + 3008.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁶⁹⁰⁴⁷¹ is an apocalyptic number.

690471 is a deficient number, since it is larger than the sum of its proper divisors (346329).

690471 is a wasteful number, since it uses less digits than its factorization.

690471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 690471 is about 830.9458466110. The cubic root of 690471 is about 88.3856610172.

The spelling of 690471 in words is "six hundred ninety thousand, four hundred seventy-one".