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690504 = 23328771
BaseRepresentation
bin10101000100101001000
31022002012020
42220211020
5134044004
622444440
75604063
oct2504510
91262166
10690504
11431871
12293720
131b23a9
1413d8da
15d98d9
hexa8948

690504 has 16 divisors (see below), whose sum is σ = 1726320. Its totient is φ = 230160.

The previous prime is 690493. The next prime is 690509. The reversal of 690504 is 405096.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 28771 = 690504 / (6 + 9 + 0 + 5 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (690509) by changing a digit.

690504 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14362 + ... + 14409.

It is an arithmetic number, because the mean of its divisors is an integer number (107895).

2690504 is an apocalyptic number.

It is an amenable number.

690504 is an abundant number, since it is smaller than the sum of its proper divisors (1035816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690504 is a wasteful number, since it uses less digits than its factorization.

690504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28780 (or 28776 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 690504 is about 830.9657032634. The cubic root of 690504 is about 88.3870690804.

The spelling of 690504 in words is "six hundred ninety thousand, five hundred four".

Divisors: 1 2 3 4 6 8 12 24 28771 57542 86313 115084 172626 230168 345252 690504