690659047 has 8 divisors (see below), whose sum is σ = 743996960. Its totient is φ = 637351200.

The previous prime is 690659033. The next prime is 690659071. The reversal of 690659047 is 740956096.

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 690659047 - 2²³ = 682270439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690658988 and 690659006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690659647) 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, 69454 + ... + 78772.

It is an arithmetic number, because the mean of its divisors is an integer number (92999620).

Almost surely, 2^690659047 is an apocalyptic number.

690659047 is a deficient number, since it is larger than the sum of its proper divisors (53337913).

690659047 is a wasteful number, since it uses less digits than its factorization.

690659047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15033.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 690659047 is about 26280.3928243092. The cubic root of 690659047 is about 883.9368411535.

The spelling of 690659047 in words is "six hundred ninety million, six hundred fifty-nine thousand, forty-seven".